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
0637	Mozambique	1980	1986	Coinage Reform		2 1/2	Meticais	1986
0638	Mozambique	1994	1998	Republic		1000	Meticais	1994
0639	Burma, Union of	1949	1952	Republic		8	Pe	1950
0640	Burma, Union of	1952	1966	Coinage Reform		1	Kyat	1952
0641	Burma, Union of	1966	1966	Military Dictatorship		25	Pyas	1966
0642	Burma, Union of	1975	1987	Socialist Republic		10	Pyas	1983
0643	Myanmar, Union of	1991	1999	Socialist Republic		100	Kyats	1999
0644	Namibia	1993	2000	Republic		5	Dollars	1993
0645	Nepal	1892	1911	Monarchy, Constitutional	Prithvi Bir Bikram Shah	1	Paisa	1909
0646	Nepal	1881	1911	2nd Coinage	Prithvi Bir Bikram Shah	1	Mohar	1904
0647	Nepal	1911	1934	Ruler Change	Tribhuvan Bir Bikram Shah	1	Paisa	1927
0648	Nepal	1911	1932	2nd Coinage	Tribhuvan Bir Bikram Shah