I posed this question on another site too and hopefully someone will have some knowledge of this rifle. Thanks.
A friend just bought a tip up, single shot rifle marked as below:
W WURFFLEIN
PHILAD'A PA U S A
PATENTED JUNE 24th 1884
This rifle looks to be a 22 cal, heavy octagon barrel and with a tang rear sight. The barrel has a worn blued appearance, a nickeled receiver and crescent butt plate, the bore looked dirty but the rifling looks good. It has a four digit serial no.
Anybody know what he has?