Manufactured in England, this single-shot breechloading rifle incorporates Whitworth pattern hexagonal rifling to stabilize the bullet. It was nicknamed the "Monkey Tail" by South African and Portuguese troops that were issued military variations of this design based on the shape of loading lever for the breech. It features a globe front sight, long range rear sight with two leaves (one standing) and a folding ladder, "WHITWORTH PATENT" on top between the rear sight and breech, ".483" on the upper right at the breech, ".451" on the upper left, "642" and "52" along with Birmingham proofs on the left at the breech, "642" and "WESTLEY RICHARDS/PATENT" on the breechblock, "642" repeated on the inside of the breechblock on the tail, "WESTLEY RICHARDS & Co./1861" on the lock which has a sliding half-cock safety, sling swivels on the upper barrel band and front of the trigger guard, and checkering on the grasping section of the forend and the wrist. "WELLER COLLECTION/PRINCETON, N.J./466" tag and a nipple protector on a brass chain are fitted to the trigger guard. A cleaning rod extension and nipple are in the butt.