When I was young I was interested in stamp collecting - for a short time. All of this was from my Mom's house. I'm guessing most are pre-1965. Some of the albums have stamps inserted. Most stamps are cancelled, but some are new. Batch of envelopes include sorted stamps and are marked by country. One whole set of "Adventurer Stamp Album" with all original contents.
100's if not a 1000+ total stamps from around the world. Some stamps pre-date current country names.