7" zinc blank
General Information
2017.0108 MOEB
Grey disc
Creator
Emile Berliner
Dating
1890
1890
Object characteristics
Diameter: 18cm, 7inch
Zinc
Object identification
7" zinc blank for etching on original record (A.B. One side should be highly polished. I suggest that you have it buffed, in case you use it."(Oliver Berliner)