Over the past several years Topps has been going into their archives and selling some original art from their vintage card sets. They have primarily sold them through eBay under ToppsVault. The below item likely came from one of those sales, but is now being sold by an independent dealer. It is the original drawing used for the reverse of Walter Alston's 1969 Topps card. I must say this piece is pretty awesome- though the price is a little too rich for my blood.