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
0493	Jersey	1931	1935	Coinage Reform		1/12	Shilling	1935
0494	Jersey	1937	1952	Ruler Change	George VI	1/24	Shilling	1947
0495	Jersey	1954	1966	Ruler Change	Elizabeth II	1/12	Shilling	1964
0496	Jersey	1968	1981	Coinage Reform		2	Pence	1980
0497	Jersey	1982	2000	Coinage Reform		1	Pound	1998
0498	Transjordan	1949	1949	Monarchy	Abdullah I bin Al-Hussein	50	Fils	1949
0499	Jordan	1955	1967	Ruler Change	Hussein bin Talal	50	Fils	1965
0500	Jordan	1968	1991	Coinage Reform		50	Fils	1981
0501	Jordan	1992	1998	Coinage Reform		5	Piastres	1993
0502	Jordan	2000	2000	Ruler Change	Abdullah II bin Al-Hussein	5	Piastres	2000
0503	Katanga	1961	1961	Republic		5	Francs	1961
0504	Kazakhstan	1992	1995	Republic		10	Tyin	1993