It's a worldwide album so basically any country is desired. The only reason I'm casting such a broad net is because one can't usually find kiloware of stuff before 1940 because it's usually worth more. There is at least a few pages of any major country and at least a page for any colony. I really am grasping at straws, but I've been surprised before at shows finding entire stockbooks of nothing but classics arranged by country, but I always catch them after they've been sold and are being shown off to other collectors by the buyer.
I guess in essence my request is: if you have one stamp from Labuan or something, it's not worth your time to reach out to me, but if you have 500 stamps from Labuan, then we're talking.
Countries that are well filled: Germany, Bosnia, Canada, Czechoslovakia, Somalia, Jugoslavia, Eritrea
Countries with nary a stamp: Aitutaki, Andorra, Allenstein, Azores, Bermuda, Brunei, Cape of Good Hope, Cayman Islands, Cape Verde Islands, Congo, Cook Islands, Cuba, Crete, Cilicia, Danish West Indies, Diego Suarez, Fernando Po, Falkland Islands, Fiji, French Colonies, German Colonies, Greece, Haiti, Indochina, Liberia, Martinique, Mozambique, Portugaló to name a few