Where can I find a 3 handle nickel finish shower and tub replacements

Are you asking about just replacing the handles?

And what brand of faucet? Really have to give more info if you want help

Some companies like Moen sell an updated trim kit but not everybody does this. Randy, let us know exactly what you are asking about and one of us will know how to help you.

3 handle faucet are slowly going out of style. Price Pfister still makes them... but are harder to get.

What do you want to replace ? All new faucet or just trim ?

Milo was in error. For a selection of Three Handle Tub/Shower Valves by various manufactures click on, Three Handle Shower - More Categories - Compare Prices, Reviews and Buy at NexTag - Price - Review
Good luck, Tom

Not necessarily Tom am I wrong. I am just up to date. A lot has changed since you were in the field...

When you go to Home Depot these days, you will now find one, maybe two if you lucky, 3 handle faucets. That's why you have to go to NexTag - Compare Prices Before You Buy - as you suggest, meaning the whole world, to find very limited selection of 3 handle faucets. In my area, they are against the Code - unless you install pressure balancing device with access door under the valve. Reason is that most of the country now requires pressure balanced, temperature controlled valves. These are mostly manufactured as single handle units.

Perhaps in UPC land but I'm looking at hundreds of three handled tub/shower valves by all the major manufactures. But you may be correct. I attempt to stay up to date but I'm having a problem keeping up with all the things UPC outlawed. Thanks for keeping me up to date. Tom