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Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU155Linear
4040
4060
1
Mannheim AdjustableKeuffel & EsserUSA
89
Engine divided celluloid laminated mahogany
"10"
1900
C5

Notes: "Similar to 4041 Mannheim, but with metal chisel tooth indicator. Has adjustable frame via three screws. KEUFFEL & ESSER CO. NEW-YORK on frame. Has cutout/window on only the right side of back."

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