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Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU028Linear
4081-3
4617
n/a
Log Log Duplex DecitrigKeuffel & EsserUSA
682317
Engine divided celluloid laminated mahogany
"10"
1939
C5

Notes: "Reverse scale order is LL0 LL00 A on upper stator with LL0 and LL00 scales in red. Patent notation: PATS. 1,488,686 1,930,852 PAT.PEND."

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