A breakaway registration pin (11, FIG. 2) comprises two sections, a first section (21) embedded in a glass art master (10) and a second section (22) bonded by a bonding agent to a top face (33) of the embedded first section (21). The bonding agent has a strength substantially less than the strength of the glass such that the registration pin (11) will break before the glass in art master (10) cracks when a force is applied to second section (22).