This is one of approximately 24,000 Model 1842 pistols manufactured by Henry Aston & Co. of Middletown, Connecticut, c. 1846-1850 according to Flayderman's Guide. This example is dated "1849" on the barrel tang and the tail of the lock, marked with "US/JH/P" the breech, "US/H. ASTON" at the center of the lock with "MIDDtn/CONN" above the date on the tail, with boxed script "JH" and oval "W.A.T" (William A. Thornton) inspection cartouches stamped on the left stock flat, and small "K" and SK" inspection marks on various components.

Fine, showing a mostly bright finish on the barrel and lock with some light brown patina and faint spotting, the brass has an attractive aged patina. The hammer lip is chipped. The revarnished grip is also fine with a few minor marks and crisp cartouches. Mechanically excellent.