Maybe you could send the pictures to your tire guy and he could ID them, at least tell you in advance if he will work on them.
I changed the fronts on my truck, Dayton cast spoke wheels. I used great care and a 25 foot long inflation hose with a remote valve and gage. Inflated them 10 psi, then deflate, then 20 psi, then deflate, etc up to 70 psi. Tire laying flat in the open, me behind a stout post. Had no choice, we were out in the middle of North Dakota, 500 miles from home and the old tires were 50 years old.
