1933 General Motors 25th Anniversary Medal. Silver-Plated Bronze. 76 mm. By Norman Bel Geddes. MS-64 (NGC).strongObv:/strong Stylized automobile piston. strongRev:/strong Futuristic streamlined winged automobile. strongEdge:/strong MEDALLIC ART CO NY. Handsome antique silver surfaces with warm olive-gray patina in the recesses. Both sides are generally smooth in hand with only a few wispy carbon flecks precluding a full Gem rating. This is a popular Art Deco design, an example of which was featured on the cover of the July 2014 issue of emCoin World/em where the cover article by David T. Alexander discussed various Art Nouveau and Art Deco medals.