Only around 300 of these First Model rifles were manufactured by Parry W. Porter. They are most readily identifiable from the later models by the shape of the primer magazine. It has an off-set blade front sight, rear sight base, "ADDRESS/P.W. PORTER/NEW-YORK" and "P.W. PORTER'S/PATENT/1851." on the upper right barrel flat, "215" on various components, and a smooth buttstock with crescent rifle buttplate. Includes a notarized letter indicating the rifle was given to Charles Lyman Brown (1869-1950/51) by a friend during his adult life, possible as a payment for an engineering project.

Very good plus overall with mostly dark brown patina along the barrel and buttplate, mostly lighter gray patina on the action, broken rear sight, some play in the barrel fit, mild pitting, and moderate scrapes and dings along with some minor chipping on the buttstock. The link for the hammer is absent, and thus, the hammer must be cocked by hand. Otherwise, it appears to be mechanically fine. A "fresh to the market" example of a desirable and unique American longarm!