Congo (Republic of) - 1975 - Nb 401/404 - Prehistoric animals - Mint hinged
Mint hinged
Yvert No. 401/404
Mint hinged
Yvert No. 401/404
Mint never hinged
Yvert No. 2732/2735
Mint never hinged
Yvert No. 3231/3234
Mint never hinged
Yvert No. 512/514
Mint never hinged
Yvert No. 401/403
Mint never hinged
Yvert No. 1532A/1532D
Mint never hinged
Yvert No. 968/971
Mint hinged
Yvert No. 1860/1865