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
0793	Serbia	1897	1897	Monarchy	Alexander I	1	Dinar	1897
0794	Serbia	1904	1917	Ruler Change	Peter I	50	Para	1915
0795	Serbia	1942	1943	German Occupation		10	Dinara	1943
0796	Seychelles	1939	1951	Ruler Change	George VI	1	Rupee	1939
0797	Seychelles	1953	1975	Ruler Change	Elizabeth II	5	Cents	1972
0798	Seychelles	1976	1977	Republic		1	Rupee	1976
0799	Seychelles	1977	1977	Coinage Reform		5	Cents	1977
0800	Seychelles	1981	2000	Coinage Reform		5	Cents	1982
0801	Sierra Leone	1964	1964	British Commonwealth Realm (Dominion)	Elizabeth II	1	Cent	1964
0802	Sierra Leone	1972	1984	Republic		10	Cents	1984
0803	Sierra Leone	1987	1988	Coinage Reform
0804	Sierra Leone	1996	1996	Coinage Reform		10	Leones	1996