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Details and Image
Item#
Type
Model No.
Model Name
Maker
Country
Material
Diameter
Date
Condition
HAL002
Pocket
2120
Halden's Calculex
Joseph Halden
UK
Nickel-plated Brass
"2-7/16"
c.1915-1920
C5
Notes:
Hopp Type 1c - Type 1 in all aspects except has two screws on one side. Glass cursors with beveled edge.
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Condition Code
to obtain more details.
