1922 Ad Precision Instruments British Thermal Units Gravity Recorder IEC1 XES4 Photography by C

Photography by C

maker of Postum Coffee

This is an original 1906 sepia halftone print of a view of the head of Valley 2

radio-phonograph

1922 Ad Precision Instruments British Thermal Units Gravity Recorder IEC1 XES4 Photography by CThis is an original 1922 black and white print ad for the Precision Instrument COmpany, specially featuring the Gravity Recorder and the Recording Calorgraph. CONDITION This 89+ year old Item is rated Very Fine +++. Light aging throughout. No creases. No natural defects. No surface rub. No tears. No water damage. There is some bleed through visible on this this ad. Product Type: Original Print Ad; Black White Grade: Very Fine +++ Dimensions: