1-5/8" receiver hitch from the stone age?

[mkirsch]

I bought a pallet of stuff that looks like leftovers from an old auto parts store. Anyone need a new radiator for a squarebody GM?

In one of the boxes I found two brand new 1-5/8" square shanks rated for 350/3500 towing. How old would these be? 

[Bedlam]

Many hale bale spears are 1-5/8", I wonder if the hitch can be used an adapter for those? Brophy still makes a 1-5/8" to 2" adapter and Putnam used make Class II 1-5/8" hitches before going out of business.

[Grit_dog]

Cool!

Ya, prolly no market for the odd ball sized old hitches. 
But depending on what radiator it is, might take it off your hands. NOS or aftermarket?

Have to measure mine but only interested if it’s a HD/big block radiator. 
cheers