Eric, You can buy tailpieces blank. In my case, I bought an unfinished James tailpiece, which i sent to Weldon. I then discussed the design options with him, so you can get a truly custom design. I had these photos of engraved tailpieces, where Weldon, then filled in the areas w/ black as on this one:
IMG_7410 by
, on Flickr
Apologies for hijacking your thread Dale.