small metal box with single shot percussion lock

firing pin cocked

1. button to open the lid
2. button to fire

1 Cent Lincoln for comparison

outside open

from the small side

a easily to carry pocket pistol in the size of a snuff tobacco box, measures 3½" * 2¼" *  1½". The metal kept in the white and now is mottled, cal. circa .38 percussion, pushing the smaller button sideways the lid will open, pushing the bigger button and the firing pin will hit. In fine working order and condition, made during the 1850's, probably a forerunner of the Frankenau purse pistol.
Perhaps  one of the kind ?  $2,750.