http://www.ebay.ca/itm/BG544-Vtg-GMC...UAAOSwQYZWzG5o
All the usual disclaimers about not knowing the seller (at least as far as I know) apply.
Added so the info doesn't disappear with the ebay listing:
BG544 Vtg GMC Chevrolet Chev Chevy WW2 Truck CCKW CMP Steering Wheel NOS
Features:
Markings: Refer to detailed photos.
Dimensions (Approx.): 3.6, Shaft: 1"Diameter, Keyed. Over-all: 18.00"W x 18.00"H x 2.75"D.
Condition: Refer to detailed photos
Buy it now price $494.99 US
The seller received (and declined) 1 offer in the first 4 days of the listing.