Zale 10B-1 patent, tip WK-2

Zale 10B-1 patent, tip WK-2

Zale 10B-1 patent, Wippermann

Zale 10B-1 patent, Wippermann

Zale 10B-1 patent, tip WSK-2

Zale 10B-1 patent, tip WSK-2