Swan Neck Ring Stamp Punch, Purity Marks 925, 375, 9K to 22K, Hardened Steel Jewellers Marking Tool, 78 mm

Stamps a purity mark on the inside of a ring shank, where a straight punch cannot reach. For jewellers, silversmiths and repair benches.

• 13 impressions, one per punch: 925, 999, 920, 916, 750, 585, 375, 333, 9K, 14K, 18K, 21K and 22K. Pick yours from the Impression menu
• 3 mm x 1.6 mm impression (approx.)
• 78 mm long, 6.8 mm square bar
• Hardened steel, polished finish
• Swan neck offset clears the ring, so the face sits flat inside the band
• Approx. 50 g

Built for: marking finished rings and bands. Support the ring on a steel mandrel, seat the face inside the shank and strike once, squarely. One firm blow gives a cleaner mark than several light ones.

In the box: 1 x swan neck stamp punch in the impression selected.

A purity stamp is not a UK hallmark. Precious-metal articles sold in the UK above the exemption weights must be hallmarked by an Assay Office.