This is one of the next stages of the heart I posted about recently. I normally solder a "QC" (quality control) circle onto the back of all my work. It contains a quality stamp of the type(s) of metal used in the piece, and my makers mark. In the process of unpacking and getting the studio set up, I realized that @[577432844:2048:Esther Eve] in Texas was in possession of my stamps! So, had to make due here with my engraver for the time being.