I'v got about 7 of these things... they're all new old stock, but none of the tags I have say what they are for. They just have an old part number which I believe was made up and kept by the old parts store anyways. My guess is it's from the 30's or pre 1949?
That is for around a 46 Diamond T truck, possibly up to 1950. It looks just like the one on my 1946 1 1/2 ton. Is it for sale?
Thanks for the help... yeah they are for sale. $10 a pair, I have 7 of them. If you want a set, send me a PM.