Simeon North was one of the most influential arms makers of the early republic beginning with manufacturing the first U.S. martial pistol, the North & Cheney Model 1799, and finally ending with the Model 1843 Hall carbines right up to his death in 1852. He was influential in developing the first milling machines and establishing truly interchangeable parts on U.S. martial arms. He manufactured 6,501 of these Model 1840 Hall carbines in 1840-1843. 6,001 of them were the standard Type II with the distinctive "fishtail" shaped breech lever. The vast majority of these were smoothbore, and some were later bored out to larger calibers or rifled. This 1840 dated example remains in .52 caliber with its original smooth bore. It has standard sights and markings. Inspection initials "EB" marked on left of the breech, "U.S/S.NORTH/MIDLtn/CONN/1840" marked on top of the breech block.

Good with gray and brown patina, extensive pitting visible around the breech, scattered deep dents on barrel and top of breech block, and legible breech block markings. Modern replacement percussion nipple. The re-oiled stock is also good, with scattered light scratches and dents, various filled in repairs visible, and three circular punch dots marked ahead of the buttplate tang. Mechanically fine.