I like coins from the interwar era. Here's some photos I have on hand. 1930: Hungary 5 Pengő 1930 Denmark 2 Krone 1930 copy Estonia 2 Krooni 1930 copy Cape Verde 20 Centavos 1930 copy
Brazil 100 Reis 1932 Egypt 2 1/2 Millieme 1933 Spain 25 centimos 1934 and 1937 Tibet 1935 year 16-9b 1 sho
Lithuania 10 Litų 1936 South Africa 2 1/2 Shilling 1937 (and 1940) Brazil 400 Reis 1938 Japan 1 sen Showa 12-13 1937-8 (3 different types) Seychelles Half Rupee 1939 Italy 1 Lira and Albania 1 Lek 1939 Maybe I'll see what Depression era coins I have in my loose bin...
A few more from my "junk" bin: Chile 1 peso 1933 Mozambique 20 centavos 1936 Spain 25 centimos 1937 Turkey 10 kurus 1938 British West Africa 3 pence 1939 Luxembourg (Letzeburg) 1 Franc 1939 Mozambique 50 centavos 1936 Nicaragua 5 centavos 1938 Germany 50 reichspfennig 1935