.999 quality marking stamp for metal clay. A "quality mark" is the little number or letters that indicate what metal and purity is used in an item made of a precious metal. By law, this stamp can only be used to mark an item that is made from .999 Fine Silver.

Each stamp has been calibrated with placement, legibility and shrinkage of clay in mind.

• Size: stamp is 40mm x 10mm; imprint is 4.7mm x 2mm
• Priced per piece