Quote Originally Posted by Tarheel View Post
I find the cantle of the sporran quite interesting. I will assume the metal to be pewter for these reasons. The buckle on the baldric seems to be silver. A pewter cantle would be easier to cast with the designs shown in the painting. I also like the square (obvious spacious opening) shape. One could put a lot of items in there with ease.

Sorry to distract from the OP's subject.
Ive never seen a pewter cantle, but ive not seen every surviving 18th Century sporran or cantle. Not dismissing your idea, outright, but I think that if its a white metal, then silver or even cut steel are better choices.

Here are a couple squarish sporran cantles, photos from a google search.