Dear Andrew,

Thank you for contacting Mearto with your appraisal inquiry. My sincere apologies for the delay with the appraisal.

The presented object appears to be a small-sized pistol with a swinging flintlock system. This handgun was made in the middle of the 19th century, The metal parts are harder numbered a chiseled but the origin of the gun remains unsure, and not identified gums or proof marks. The lock was made out of nutwood in the late 19th century

Sadly no additional information for an artist with this name fitting in style and motif is given by reference books and databases. 
Comparable objects were recently offered and sold on the international auction market. 
This piece is in good condition and there is no serious damage visible in the images provided.
A fair market estimation would be between 150 to 300 USD.
This estimate is based on actual recent past recorded auction sales of comparable items. Retail "asking prices" can be higher and may vary.

With kind regards, 

George