This is not a "game gun" but might be of interest:
J.C. Reilly pin-fire pistol at Rock Island - and they almost got the date right it would have been made between summer 1856 (about the time Reilly made his first pin-fire) and September 1857 (when J.C. retired). This pistol is very interesting for one reason - I didn't know that J.C. ever marketed a center-break gun.. He surely never made one. 49 bore = .45 caliber. London proofs. Where is the "Joseph Charles" - there is only "Reilly, 502 New Oxford Street, London" on the barrel.
https://www.rockislandauction.com/detail/1038/4156/engraved-pinfire-pistol-by-reilly-of-londonPinfire Pistol by Joseph Charles Reilly of London
Manufacturer: English
Model: Pinfire
Type: Pistol
Gauge: 45
Barrel: 8 1/2 inch octagon
Finish: blue/casehardened
Grip:
Stock: ebony
Item Views: 15
Serial Number:
Class: Antique
Rating:
OE - GOOD - some minor replacement parts; metal smoothly rusted or lightly pitted in places, cleaned; principal lettering, numerals and design on metal legible; lightly scratched, bruised or minor cracks repaired; in good working order.
Description:
Manufactured c. 1848-58. Engraved "REILLY, 502 NEW OXFORD STREET, LONDON." on top of barrel.