According to carbking's website HERE those were used from 1932-1949

I've seen a W-1 on an unrestored original 48 or 49 (don't remember exactly which year) AD truck.

Maybe carbking will be along to tell you what they were used on.

Last edited by klhansen; 09/26/2024 2:26 AM. Reason: rechecked. It was a 1948
Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.