Zale 10B-1 patent, tip K-1

Zale 10B-1 patent, tip K-1

Zale 10B-1 patent, tip WK-2

Zale 10B-1 patent, tip WK-2

Zale 10B-1 patent, tip WA-2

Zale 10B-1 patent, tip WA-2