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Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU469Linear
4071
4188
2
DuplexKeuffel & EsserUSA
84
Engine divided celluloid laminated mahogany
"10"
1911
C5

Notes: "Metal framed glass "clamshell" indicator. L-shaped brackets. KEUFFEL & ESSER Co N.Y. below D scale on front; patent notation: PAT. JUNE 6,'00 DEC.22,'08 below D scale on rear."

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