Jim,  I get my plating for restoration done by New England Chrome
Plating.  They always give me great service and prices.  There is
a minimum charge.  http://www.newenglandchrome.com/ 

Once, on a build-up coin piano, I had made a mess of soldering the
coin drop.  On my request, they cleaned up my mess and then did the
nickel plating.  I believe that you will like them.

Al Pebworth
Chesapeake, Virginia