Jerry,
This gun was built using two of Powell's patents - No.1163 of 1864 (action) and No.1055 of 1869 (retractable firing pins).

It was part of an 8 gun shipment to Schoverling & Daly in New York on September 24, 1872. No. 4947 is listed as being 12-b with 32" Stub Damascus barrels and weighing 7 1/4" pounds. It is a "Plain " grade gun that cost 15.

Stock dimensions aren't listed but it appears to have more drop than those sold to English clients.

Any and all images are welcome - hi res if possible.
schmjh@pacbell.net
Steve