http://www.net54baseball.com/showthr...hlight=caprice
I'll say that you're probably best off contacting someone like Greg Morris as well, especially for the post-1940s cards. But you would do well to find a trusted board member in your area to confirm authenticity and then advise you upon seeing the card.
People keep saying that you'll pay no "sellers premium" to an auctionhouse still think it's perfectly appropriate to pay 20% for the buyers premium. They're the same thing: a percent of your sold card price that goes to the place you sell the cards to.
If you want to be more involved in the actual selling part, I am a huge fan of COMC. I've sold thousands of cards on there in just a couple of years. You mail the cards to COMC, they scan and store them, you set the price, and when they sell, COMC mails them to buyers all over the world (even through eBay and Amazon).