You are looking at a post card of the first day cover of #2417, the Lou Gehrig Stamp.  This is a nice FDC that is available for $1.99 or your best offer.  Since the cachet is hand applied, the picture and cancellation may not be exact as it is pictured.

Thank you for your interest in this item.  The picture shows the front and back, but this offer is for only one post card.

Deliveries outside the US will require additional postage.  International purchasers outside the US or Canada should wait for an invoice prior to payment.