Sorry to be the bearer of bad news,but they are not the original wheels.Here is some pages from the green book.

[Linked Image]
[Linked Image]
Also rings come on eBay from time to time but will set one back at least $100 to $150 per ring.I guess that's another reason why I would fix it,but as you said there would have to be some welding done to repair the ring.

Here for a good time,not a long time.