Not so fast my friend.....he doesn't have it! Upon further investigation, it's a 40's Chevrolet/GMC military wheel. http://mapleleafup.net/forums/showthread.php?t=24125 http://thierry.becker.free.fr/VolantsGMC.htm 1944
They're both correct. They were made by GM's Inland Manufacturing Division in 1924, went to hard rubber after and back to wood in 1942.
Yeah, right after Pearl Harbor, the Japanese captured ninety percent of the United States' natural rubber supply in SE Asia and tires were rationed January of 42.
An old farmer neighbor of mine had a 1942 or 43 Allis Chalmers tractor that he bought new that came with steel wheels because of the war. After the war was over he bought new wheels and rubber tires for it.