roman tub fixture replacement

Want to replace Roman tub spout and handles. No idea what brand faucet this is. No luck using Google image search. Anyone seen this before? How do I figure out what will be compatible with the valves I have?

We are in the process of selling our house and are trying to update the Roman Tub Fixtures. We currently have Price Pfister Gold fixture from 22 years ago on a Jacuzzi tub. There is no access below. I tried replacing the spout but it does not fit. I called pfister to what models would fit...