I can give you the a general idea of what vintage postcards are selling for, and where you can sell them if you like. Such as plain ones sell for ? fancy ones ? hand painted ones ?. If you can give me an idea of what yours are?
You can see they look like little paintings. Those are pretty rare, and are not found often. Most are printed, with flowers, or scenes of where they are from.
If some one looked at them for you, they will charge you to do so. They charge around $100.00 an hour with a minimum of 100.00 to start.
I can give you a general idea of what they sell for if you like. Then you can decide where you want to sell them. Most people sell them on Ebay. The Risque ones generally sell on the higher end.