kits for the reproduction of engravings, comprised of non-electric engraving knives and nibs, inking rollers, and plastic sheets suitable for use as matrices for the production of engravings and sold as a unit

KITS FOR THE REPRODUCTION OF ENGRAVINGS, COMPRISED OF ENGRAVING KNIVES AND NIBS, INKING ROLLERS, AND PLASTIC SHEETS SUITABLE FOR USE AS MATRICES FOR THE PRODUCTION OF ENGRAVINGS AND SOLD AS A UNIT