Original 1934 Lincoln New Car Ad Proof. This Ad Proof is for the May Issue of National Geographic Magazine. This Proof is on slick paper and features a Le Baron Convertible Roadster. It is in good condition for its age with some wear, blemishing and discoloration [see photos]. It has minor tearing on edges and is creased across the middle from being folded in half. Will still make a very cool framed display piece.