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Details and Image



Item#TypeModel No.Match No.Variant No.Model NameMakerCountryProduction or Serial No.MaterialScale LengthDateCondition
KEU403Linear
N4041F
4072
n/a
Mannheim AdjustableKeuffel & EsserUSA
318199
Engine divided celluloid laminated mahogany
"10"
1929
C3

Notes: Framed widened 10% (31mm to 34mm). Model number changed to N over <4041> and moved to right end of slide. Annotations from below D scale to above A scale. Scale labels added to front scales. Conversion table changed to USBS Circular 47 version.

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