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Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU648Linear
4088-1
4296
2
Polyphase DuplexKeuffel & EsserUSA
115512
Engine divided celluloid laminated mahogany
"5"
1924
C5

Notes: Frameless glass indicator. Patent notation are dates. All notations are in small font. Different scales than variant #1. CF and DF scales are folded on 3.7 rather than ? and no ? guage marks. CIF scale folded on 2.7. All other scales are the same.

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