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Details and Image
Item#
Type
Model No.
Model Name
Maker
Country
Material
Diameter
Date
Condition
HAL001
Pocket
2121
Halden's Calculex
Joseph Halden
UK
Nickel-plated Brass
"2-7/16"
c. 1921-1924
C4
Notes:
Hopp Type 2. Has celluloid cursor instead of glass. Has Made in England on center hub front side.
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Condition Code
to obtain more details.
