Midnite, you’ve probably sorted this long ago as it’s over a year, but the usual practice with these was to cut the key on a standard blank and retrofit an ornate brass bow afterwards, as you’re unlikely to find a fancy brass blank in either pin or pipe of the right gauge you need.
if this was 5 or 6 years ago you could have taken your pick as I had a box of cast rococo brass bows (really ornate!) plus antiqued finish in a range of styles but I sold the last of them off about 4 or 5 years ago. Think the ones we had were mostly silca from the late 1970s/early 80s.
