Hello - I have an old Jacuzzi Tub with a Roman Faucet. I am trying to figure out what the brand is so I replace a chewed-up hot stem. There are no markings, part numbers or logos anywhere on the faucet, handles, or stems. I've attached a picture. It is 5 ¼” long and I think has 12 splines (it’s hard to tell because they are chewed up, but I counted the notches in the top of the handle). The splines themselves are almost ¾” long. I can’t find any logos or manufacturer identification anywhere. Does anyone have any ideas?