Found a Bunch of Vintage Airline Postcards - Keep or Sell?

Hey folks, so I recently came across a box of vintage airline postcards while helping my aunt clear out her attic. She said they belonged to my uncle, who was a big aviation enthusiast back in the day. They're mostly from the 50s and 60s, featuring airlines like Pan Am, TWA, and BOAC. Some of them are even unused!

I'm not really a collector myself, but I can't help but wonder if these are worth anything or if I should just keep them for nostalgia's sake. Has anyone here ever dealt with vintage postcards? Are there specific ones that are considered rare or valuable?

Also, if I decide to sell, where would be the best place to do that? eBay? An auction house? Any advice or thoughts would be much appreciated!

I'd definitely hang onto them, at least for now. Vintage airline stuff can be pretty nostalgic, and who knows, they might gain value over time. If you do decide to sell, eBay's a solid start. It's got a wide audience, and you can get a decent idea of their value by checking similar listings. Some postcards are worth more if they're rare or in mint condition. If you want a more specialized audience, maybe look into aviation memorabilia forums or groups.