NEW GUY w/ wheel question

Hello everyone

to not be rude a little about me first:
live in Ohio
own a 63 Tempest G***er (pic)
diggin the site

Have friend with these set of wheels. Trying to ID following casting info ON BACK OF RIM:
15 x 10
A with a circle around it-- appliance wheel?
9M731M
8510
1850LBS LOAD
Enclosed a few pics. He has one rim looking to purchase another.
appreciate any help or info

Bone

 

welcome

 

Welcome from Indy. Try posting on the main board. Lots of wheel guru's over there. NICE Poncho!