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This 72+ year old Item is rated Near Mint / Very Fine. Light aging in margins. No creases. No natural defects. No surface rub. No tears. No water damage.
This piece was illustrated by Smith, Edward C.. Artist signature in print - bottom right of image.
Keywords specific to this image: Yaxley, P.R. Mallory, Indianapolis, Volume Control, Push Button Switches, Anatomy, Communications Vintage Advertising