One From Every Country
(or more correctly, one from every sub-entity!)
An example for each of the 1048 (of 1086) coinage types in my definitive 20th Century OFEC Collection
Note that they are in the same order as on the "20th Century OFEC Entities" page.
(I am in the process of adding images of each coin, please bear with me; in the meantime - get in touch!)

#	Sub-Entity Name	coins from	coins to	Political Designation	ruling authority	Den.	Unit	A.D. Year
0001	Afghanistan	1901	1901	Emirate under British Suzerainty	Abdur Rahman Khan
0002	Afghanistan	1901	1919	Ruler Change	Habibullah Khan	1	Rupee	1903
0003	Afghanistan	1919	1924	Independent Emirate	Amanullah Khan	1/2	Rupee	1922
0004	Afghanistan	1925	1928	Monarchy	Amanullah Khan	1	Afghani	1927
0005	Afghanistan	1928	1930	Saqqawist Emirate	Habibullah Kalakani	1/2	Rupee	1929
0006	Afghanistan	1929	1935	Monarchy	Mohammed Nadir Shah	1/2	Afghani	1932
0007	Afghanistan	1933	1961	Ruler Change	Muhammed Zahir Shah	5	Afghanis	1961
0008	Afghanistan	1973	1973	Republic		5	Afghanis	1973
0009	Afghanistan	1978	1981	Democratic Republic		5	Afghanis	1978
0010	Albania	1926	1931	First Republic		1/2	Lek	1926
0011	Albania	1930	1938	Monarchy	Zog I	1	Frang Ar	1935
0012	Albania	1939	1941	Italian Occupation		1/2	Lek	1940
0013	Albania	1947	1957	People's Republic		5	Leke	1957
0014	Albania	1964	1969	Coinage Reform		50	Qindarka	1969
0015	Albania	1988	1989	People's Socialist Republic		2	Leke	1989
0016	Albania	1995	2000	Fourth Republic		20	Leke	1996
0017	Algeria	1949	1956	French Colony		20	Francs	1949
0018	Algeria	1964	1964	People's Democratic Republic		1	Dinar	1964
0019	Algeria	1970	1989	Coinage Reform		5	Dinars	1972
0020	Algeria	1992	2000	Coinage Reform		100	Dinars	1993
0021	West Africa, Portuguese	1921	1924	Portuguese Republic Colony		50	Centavos	1923
0022	West Africa, Portuguese	1927	1928	Coinage Reform		50	Centavos	1928
0023	West Africa, Portuguese	1948	1950	Coinage Reform		10	Centavos	1949
0024	Angola, Portuguese	1952	1974	Portuguese Overseas Province		10	Escudos	1952
0025	Angola	1977	1992	People's Republic		1	Kwanza	1979
0026	Angola	1999	1999	Republic		2	Kwanzas	1999
0027	Argentina	1896	1968	Republic		10	Pesos	1963
0028	Argentina	1970	1981	Coinage Reform		1	Peso	1976
0029	Argentina	1983	1985	Coinage Reform		1	Peso	1984
0030	Argentina	1985	1991	Coinage Reform		1	Centavo	1986
0031	Argentina	1992	2000	Coinage Reform		1	Centavo	1998
0032	Armenia	1994	1997	Republic		1	Dram	1994
0033	Aruba	1986	2000	Dutch State	Beatrix	1	Florin	1988
0034	Australia	1910	1910	Ruler Change	Edward VII	3	Pence	1910
0035	Australia	1911	1936	Ruler Change	George V	1	Florin	1936
0036	Australia	1937	1952	Ruler Change	George VI	1	Crown	1937
0037	Australia	1953	1964	Ruler Change	Elizabeth II	1	Florin	1963
0038	Australia	1966	2000	Coinage Reform		50	Cents	1966
0039	Austro-Hungarian Empire (Austria)	1892	1916	Empire	Francis Joseph I	2	Corona	1913
0040	Austro-Hungarian Empire (Austria)	1916	1918	Ruler Change	Charles I	2	Heller	1918
0041	Austria	1923	1924	First Republic		1000	Kronen	1924
0042	Austria	1925	1938	Coinage Reform		2	Schilling	1928
0043	Austria	1934	1938	Federal State		1	Schilling	1934
0044	Austria	1946	2000	Second Republic		10	Schilling	1968
0045	Azerbaijan	1992	1994	Republic		50	Qapik	1993
0046	Azores	1901	1901	Portuguese Kingdom Colony	Carlos I	5	Reis	1901
0047	Bahamas	1966	1970	Ruler Change	Elizabeth II	1	Dollar	1966
0048	Bahamas	1971	1973	British Self Governing Colony	Elizabeth II	1	Cent	1973
0049	Bahamas	1974	2000	British Commonwealth Realm	Elizabeth II	10	Cents	1982
0050	Bahrain	1965	1966	Ruler Change	Isa bin Salman Al Khalifa	100	Fils	1965
0051	Bahrain	1992	2000	Emirate	Isa bin Salman Al Khalifa	100	Fils	1995
0052	Bahrain	2000	2000	Ruler Change	Hamad bin Isa Al Khalifa	500	Fils	2000
0053	Bangladesh	1973	2000	People's Republic		25	Poisha	1974
0054	Barbados	1973	2000	British Commonwealth Realm	Elizabeth II	1	Cent	1985
0055	Belgian Congo & Ruanda-Urundi	1952	1960	Monetary Union		5	Francs	1956
0056	Belgium	1865	1909	Monarchy	Leopold II	2	Centimes	1905
0057	Belgium	1910	1935	Ruler Change	Albert I	20	Francs	1934
0058	Belgium	1915	1918	German Occupation		25	Centimes	1915
0059	Belgium	1935	1940	Ruler Change	Leopold III	1	Franc	1939
0060	Belgium	1941	1947	German Occupation		25	Centimes	1944
0061	Belgium	1944	1944	Allied Occupation		2	Francs	1944
0062	Belgium	1948	1981	Monarchy	Leopold III (resumed)	20	Francs	1950
0063	Belgium	1952	2000	Ruler Change	Baudouin I	20	Francs	1980
0064	Belgium	1994	2000	Ruler Change	Albert II	5	Francs	1994
0065	British Honduras	1894	1901	British Colony (Self Gov from 1964)	Victoria	50	Cents	1901
0066	British Honduras	1904	1909	Ruler Change	Edward VII	25	Cents	1906
0067	British Honduras	1911	1936	Ruler Change	George V	50	Cents	1919
0068	British Honduras	1937	1952	Ruler Change	George VI	1	Cent	1949
0069	British Honduras	1954	1973	Ruler Change	Elizabeth II	50	Cents	1964
0070	Belize	1973	2000	British Colony (name change)	Elizabeth II	5	Cents	1979
0071	Belize	1981	2000	British Commonwealth Realm	Elizabeth II	1	Dollar	1990
0072	Bermuda	1964	1964	Ruler Change	Elizabeth II	1	Crown	1964
0073	Bermuda	1970	1985	Coinage Reform		10	Cents	1971
0074	Bermuda	1986	2000	British Dependent Territory	Elizabeth II	25	Cents	1986
0075	Bhutan	1835	1910	Third Period - Diarchy		1/2	rupee	1835
0076	Bhutan	1910	1927	Monarchy	Ugyen	1/2	rupee	1910
0077	Bhutan	1928	1951	Ruler Change	Jigme	1/2	Rupee	1928
0078	Bhutan	1966	1966	Ruler Change	Jigme Dorji	3	Rupees	1966
0079	Bhutan	1974	1975	Ruler Change	Jigme Singye	5	Chetrums	1975
0080	Bhutan	1979	2000	Coinage Reform		1	Ngultrum	1979
0081	Biafra	1969	1969	Republic		1	Shiling	1969
0082	Bohemia and Moravia	1940	1944	German Protectorate		20	Haleru	1941
0083	Bolivia	1872	1951	Republic		5	Bolivianos	1951
0084	Bolivia	1965	1980	Coinage Reform		1	Peso Bolivianos	1968
0085	Bolivia	1987	2000	Coinage Reform		1	Boliviano	1991
0086	Bosnia and Herzegovina	1998	2000	Coinage Reform		10	Feninga	1998
0087	Botswana	1976	2000	Coinage Reform		1	Thebe	1976
0088	Brazil	1889	1913	First Republic		200	Reis	1901
0089	Brazil	1918	1935	Coinage Reform		100	Reis	1925
0090	Brazil	1932	1932	Second Republic		100	Reis	1932
0091	Brazil	1935	1938	Coinage Reform		5000	Reis	1938
0092	Brazil	1938	1942	Third Republic		500	Reis	1939
0093	Brazil	1942	1956	Coinage Reform		1	Cruzeiro	1945
0094	Brazil	1956	1961	Fourth Republic		50	Centavos	1960
0095	Brazil	1965	1965	Military Dictatorship (United States of Brazil)		20	Cruzeiros	1965
0096	Brazil	1967	1979	Fifth Republic		5	Centavos	1975
0097	Brazil	1979	1986	Coinage Reform		10	Cruzeiros	1983
0098	Brazil	1986	1988	Sixth Republic		1	Cruzado	1986
0099	Brazil	1989	1990	Coinage Reform		1	Cruzado Novo	1989
0100	Brazil	1990	1992	Coinage Reform		10	Cruzeiros	1991
0101	Brazil	1992	1993	Coinage Reform		100	Cruzeiros	1992
0102	Brazil	1993	1994	Coinage Reform		100	Cruzeiros Reais	1993
0103	Brazil	1994	1997	Coinage Reform		1	Real	1994
0104	Brazil	1998	2012	Coinage Reform		10	Centavos	1998
0105	British North Borneo	1882	1907	British Protectorate	Victoria	1	Cent	1907
0106	British North Borneo	1903	1941	Coinage Reform		25	Cents	1929
0107	Nigeria-British West Africa	1907	1910	Monetary Union	Edward VII	1/10	Pence	1908
0108	Nigeria-British West Africa	1911	1911	Ruler Change	George V	1/2	Penny	1911
0109	British West Africa	1912	1936	Monetary Union	George V	2	Shillings	1913
0110	British West Africa	1936	1936	Ruler Change	Edward VIII	1	Pence	1936
0111	British West Africa	1937	1952	Ruler Change	George VI	1	Shiling	1949
0112	British West Africa	1954	1958	Ruler Change	Elizabeth II	1	Penny	1956
0113	Brunei	1886	1886	Monarchy, Absolute (a)	Hashim Jalilul Alam Aqamaddin	1	Cent	1886
0114	Brunei	1967	1967	British Protectorate	Omar Ali Saifuddien III	20	Sen	1967
0115	Brunei	1967	1993	Ruler Change	Hassanal Bolkiah	1	Sen	1970
0116	Brunei	1993	2000	Monarchy, Absolute (b)	Hassanal Bolkiah	50	Sen	1993
0117	Bukhara	1886	1911	Russian Protectorate	Abdul-Ahad bin Muzaffar al-Din	1	Tenga	1902
0118	Bukhara	1911	1920	Ruler Change	Muhammad Alim Khan bin Abdul-Ahad	1	Tenga	1917
0119	Bulgaria	1901	1913	Ottoman Principality	Ferdinand I	10	Stotinki	1906
0120	Bulgaria	1910	1917	Monarchy	Ferdinand I	1	Lev	1910
0121	Bulgaria	1923	1943	Royal Authoritarian Dictatorship	Boris III	50	Leva	1930
0122	Bulgaria	1951	1959	Peoples Republic		20	Stotinki	1954
0123	Bulgaria	1960	1990	Coinage Reform		20	Stotinki	1974
0124	Bulgaria	1992	1997	Republic		5	Leva	1992
0125	Bulgaria	1999	2000	Coinage Reform		5	Stotinki	2000
0126	Burundi	1965	1965	Monarchy	Mwambutsa IV	1	Franc	1965
0127	Burundi	1967	2000	Republic		10	Francs	1968
0128	Cambodia	1953	1953	Monarchy (a)	Norodom Sihanouk	50	Centimes	1953
0129	Cambodia	1959	1959	Ruler Change	Norodom Suramarit	20	Sen	1959
0130	Khmer Republic	1970	1970	Republic		1	Riel	1970
0131	Kampuchea	1979	1979	Peoples Republic		5	Sen	1979
0132	Cambodia	1994	1994	Monarchy (b)	Norodom Sihanouk	500	Riels	1994
0133	Cameroon, French	1924	1926	LoN Mandate - France		1	Franc	1926
0134	Cameroon, French	1943	1943	LoN Mandate - Free France		1	Franc	1943
0135	Cameroon, French	1948	1948	UN Trust Territory - French Union		1	Franc	1948
0136	Cameroon	1960	1960	Republic		50	Francs	1960
0137	Cameroon	1966	1972	Federal Republic		100	Francs	1971
0138	Cameroon	1975	1986	United Republic		100	Francs	1975
0139	Cameroon	1985	1988	Second Republic		500	Francs	1986
0140	Canada	1858	1901	British Dominion/Commonwealth Realm	Victoria	1	Cent	1901
0141	Canada	1902	1910	Ruler Change	Edward VII	1	Cent	1910
0142	Canada	1911	1936	Ruler Change	George V	25	Cents	1919
0143	Canada	1937	1952	Ruler Change	George VI	1	Dollar	1939
0144	Canada	1953	2000	Ruler Change	Elizabeth II	1	Dollar	1963
0145	Canada	1967	1967	Coinage Reform		1	Dollar	1967
0146	Cape Verde	1930	1930	Portuguese Republic Colony		50	Centavos	1930
0147	Cape Verde	1949	1949	Coinage Reform		1	Escudo	1949
0148	Cape Verde	1953	1968	Portuguese Overseas Province		2 1/2	Escudos	1953
0149	Cape Verde	1977	1990	Republic		10	Escudos	1982
0150	Cape Verde	1994	1995	Coinage Reform		1	Escudo	1994
0151	Cayman Islands	1972	1986	British Colony	Elizabeth II	25	Cents	1982
0152	Cayman Islands	1987	2000	British Dependent Territory	Elizabeth II	1	Cent	1987
0153	Central African Republic (1)	1971	1972	First Republic		100	Francs	1971
0154	Central African Empire	1978	1978	Empire		100	Francs	1978
0155	Central African Republic (2)	1975	1998	Second Republic		100	Francs	1982
0156	French Equatorial Africa	1942	1943	French Colony		50	Centimes	1942
0157	French Equatorial Africa	1948	1948	French Overseas Territory		1	Franc	1948
0158	French Eq Africa & Cameroon	1958	1958	Monetary Union		25	Francs	1958
0159	Equatorial African States	1961	1972	Monetary Union		5	Francs	1970
0160	Central African States	1973	2000	Monetary Union		10	Francs	1979
0161	Chad	1971	1972	Republic		100	Francs	1972
0162	Chad	1975	1991	Republic		500	Francs	1985
0163	Chile	1899	1941	Republic		20	Centavos	1921
0164	Chile	1942	1959	Coinage Reform		1	Peso	1942
0165	Chile	1960	1975	Coinage Reform		10	Centesimos	1963
0166	Chile	1975	2000	Coinage Reform		10	Pesos	1999
0167	China - Empire	1875	1908	Empire	Guangxu	1	Cash	1906
0168	China - Empire	1909	1911	Ruler Change	Xuantong	1	Cash	1909
0169	China - Empire	1903	1908	2nd Coinage	Guangxu	10	Cash	1907
0170	China - Empire	1909	1911	2nd Coinage - Ruler Change	Xuantong
0171	China, Republic of	1912	1934	Republic		1	Yuan	1934
0172	China, Republic of	1936	1948	Coinage Reform		5	Fen	1940
0173	Chinese Soviet Republic	1932	1933	Unrecognised State - officially part of the Rep of China		2	Jiao	1933
0174	Manchukuo	1933	1945	Japanese Puppet State	Puyi	5	Fen	1937
0175	East Hopei	1937	1937	Japanese Puppet State		1	Chiao	1937
0176	Meng Chiang	1938	1938	Japanese Puppet State		5	Chiao	1938
0177	China, Reformed Government of	1940	1940	Japanese Puppet State		10	Fen	1940
0178	China, Reorganised Gov't of	1941	1943	Japanese Puppet State		1	Chiao	1943
0179	China, People's Republic of	1955	2000	People's Republic		1	Jiao	1996
0180	China, Republic of (Taiwan)	1949	1955	Partially Recognised State - officially part of China		5	Chiao	1954
0181	China, Republic of (Taiwan)	1960	2000	Coinage Reform		5	Yuan	1981
0182	Colombia	1886	1908	Republic		5	Centavos	1902
0183	Colombia	1907	1916	Coinage Reform		2	Pesos	1907
0184	Colombia	1911	1958	Coinage Reform		5	Centavos	1933
0185	Colombia	1942	1978	Coinage Reform		1	Centavo	1963
0186	Colombia	1952	1966	Coinage Reform		50	Centavos	1963
0187	Colombia	1969	1989	Coinage Reform		50	Centavos	1972
0188	Colombia	1989	2000	Coinage Reform		200	Pesos	1994
0189	Mayotte & Dependencies	1891	1891	French Colony & dependencies	Said Ali bin Said Omar of Bambao	10	Centimes	1891
0190	Comoros, Territory of the	1964	1964	French Overseas Autonomous Territory		2	Francs	1964
0191	Comoros, Republic of	1975	1977	Republic		100	Francs	1977
0192	Comoros, Fed Islamic Rep of	1981	2000	Federal Islamic Republic		10	Francs	1992
0193	Congo Free State	1887	1908	Royal Domain	Leopold II	5	Centimes	1908
0194	Belgian Congo	1909	1937	Belgian Colony	Albert I	20	Centimes	1911
0195	Belgian Congo	1943	1949	Ruler Change	Leopold III	1	Franc	1944
0196	Congo, Republic of the (1)	1965	1965	Democratic Republic		10	Francs	1965
0197	Congo, Republic of the (1)	1967	1967	Coinage Reform		1	Likuta	1967
0198	Zaire	1973	1988	Republic		1	Zaire	1987
0199	Congo, People's Republic of the	1971	1972	Peoples Republic		100	Francs	1972
0200	Congo, People's Republic of the	1975	1990	Peoples Republic		100	Francs	1982