What kind of glue was used on the re-rings ?
These appear to be 1966 black lacquer, 20,14,12.
These need to of cleaning which won’t be fun but looking forward to the final product.
If you'll settle for key rods, pretty easy to get.I got the one's for my set from "drumsonsale.com". Brought it from a storage locker find to this. It's one I shoulda never let get away......I would expect your biggest challenge to be finding the long t rods for the bass drum.