"Everybody leaves their signature in one way or another"
This statement is also true for craftsmen like us who restore something historic. What I do is to try and make my signature sympathetic to the original builders signature.
That's got to be an art, and it must be frustrating when trying to rejuvenate careless/sloppy work, and joyful every now and again when trying to emulate the previous efforts of a master craftsman. Luckily in the historical artifact-grade restoration trades you folks are blessed with not having to be lowest bidder.