It's p1202-1171, issued in early 1936. We also have the snipe, shown on the reverse:
As the seller of this photo notes, it's "a joyous and sexy, but bittersweet image since this radiant star would die in a plane crash."
The photo is 8" x 10", with slight creasing. Two bids have already been made, the highest at $13.49, and bidding will end at 4:10 p.m. (Eastern) Sunday. If you are interested in owning this rare image, go to http://cgi.ebay.com/Carole-Lombard-Vintage-pinup-photo-airplane-1936-/370458287581?pt=LH_DefaultDomain_0&hash=item564108dddd.