Since I have just done the homework on finding a replacement shower faucet for my '68 Caravel
I thought I'd pass along the info.
The faucet is not the typical 4" center bath, but rather 3 3/8" centers which are found on older bath/clawfoot tubs.
I have found an identical quality replacement for this faucet.
It's around 75 bucks. Chromed brass with 1/2" pipe thread outlet for handheld shower.
DO NOT go to an rv store for this. It is not worth $150+ unless you have extra money that you don't need in which case please send it directly to me..
Email me for specifics