Helm & Hahn Co. Maker's Mark

Helm & Hahn Co.

Country	USA
City	Pittsburgh PA
Era	c.1943, c.1934 c.1950

Categories: ALL, H Tags: H, H H, HH, Trade Mark

Additional Information

Description

c.1934 – c.1943: Manufacturers Building Pittsburgh PA

c.1950: 530 Duquesne Way Pittsburgh 22 PA

Rings & Mountings