Help needed: Who is GARV?

I recently acquired this pretty fine pencil drawing of an old flintlock pistol. The original piece of artwork is signed GARV.

Now, I know there is an artist of adult material named Garv; there is an Indian movie named Garv; there is a webiste devoted to mixed martial arts called Garv, and there is a Garv-Inn -- among almost a million hits devoted to the word Garv.

But I cannot track down the person who created this wonderful drawing, which is one of several similar subjects. This illustration, poorly mounted with low quality matboard, came out of a defunct printing shop in the Sacramento, Calif., area.

If anyone out there knows who this "Garv" is, I would appreciate a return comment.