I exchange according to scans and catalogue values in Scott catalogue. Difficult material from difficult countries is only available for similar material.
All stamps are scanned in JPEG format. Choose a country from list below. All countries are divided into subgroups. Click the name of the subgroup to show and hide the countries of the subgroup. Abbreviation OFSM stands for: These stamps are available only for similar material.
If you want to see directory listing of all images of stamps for exchange, you can use this link