vintage K&E Keuffel & Esser Polyphase slide rule # 4053-3, made in USA

Description

vintage K&E  # 4053-3 slide rule in good working condiition
ruler overlay is broken off at the 10'' mark
hard case has damage, missing the top flap
Wood is Walnut
Vintage item that shows signs of prior use, yellowing from age, finish loss,  scratches, nicks, dings,  dents, pitting, light rust, etc.,
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