I had a moment of weakness and sold a (I believe) signed Samuel Lafayette Click rifle, though it differed marginally by being hyphenated, S. L. - C. Like the signature presented here, the engraving was bold and deep.
I've never seen that rifle make an appearance anywhere, since then.
Ol' Samuel, is described in the Firefox book series as being a itinerant gunsmith and blacksmith of notable reputation, as well as being quite the character. Memorable would be a good description.