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Belgium 1929 - Complete volume with Large Montenez, Express stamps and others. - OBP/COB 273 t/m 298 inclusief 292C/292H - Catawiki
Belgium 1931 - Albert with kepi and Queen Elisabeth nurse - OBP 317/24 + 326/32 - Catawiki
Special Delivery Stamps for sale
Stamps from Belgium - - The free online stampcatalogue with over 500.000 stamps listed.
Belgium 1894/1929 - Selection series and stamps - POSTFRIS - ex OBP 68/295 - Catawiki
Belgium E1-E5,E6,used.Mi 266-269,304,325. Special Delivery Stamps,1929-1932.
Belgium: Letters Using High Value Stamps Issued 1929-1936 - Philatelic Database
Belgium 1929/1931 - Complete series of newspaper stamps - OBP/COB JO19/36 + 37/40 - Catawiki
Rarities - Museum of Philately
Special Delivery Stamps for sale
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Belgium: Letters Using High Value Stamps Issued 1929-1936 - Philatelic Database