Rarity depends on the mintage and the number of specimens still in circulation.
1928Ireland ¼ penny (farthing) 1928 - Irish Free State - Snipe
1928Ireland ½ penny 1928 - Irish Free State - Sow and Piglets
1929Guernsey 1 double 1929 - Coat of arms
1929United Kingdom 1 Penny 1929
1930Greece 20 drachmas - Neptune - 1930
1931France 5 centimes 1931 - Lindauer
1931Germany 1 REICHSPFENNIG 1931 A
1931Ireland 1 penny 1931 - Irish Free State - Hen and Chicks
1933France 5 francs 1933 - Bazor
1933France 5 francs 1933 - Lavrillier
1933France 50 centimes 1933
193420 francs - Albert I in Dutch
1934France 1 franc 1934
1934Germany 1 REICHSPFENNIG 1934 A
1934Ireland 3 pence 1934 - Irish Free State - Hare
1935Belgium 20 francs 1935
1935Germany (Third Reich) 50 REICHSPFENNIG 1935 D
1935Germany 10 Reichspfennig 1935 A
1936Germany 1 REICHSPFENNIG 1936 A
1936Norway 1 øre 1936
1937Germany (Third Reich) 5 REICHSPFENNIG 1937 A
1938Germany (Third Reich) 1 REICHSPFENNIG 1938 E
1938Germany (Third Reich) 10 REICHSPFENNIG 1938 J
1938Germany (Third Reich) 5 reichspfennigs 1938 A
Germany 63
France 47
Portugal 21
Ireland 19
United Kingdom 18
Norway 16
Guernsey 11
Netherlands 10
Italy 9
Canada 7
Mexico 7
Isle of Man 6
Belgium 5
Denmark 2
Greece 2
Switzerland 2
Colombia 1