1943 Ad Bell Telephone Systems High Vacuum Tube Wartime H.D. Arnold WWII YPM1 XGZ7 Subdivision

Subdivision

This is a small original 1928 black and white print ad for the Good Luck Jar Rubbers from Boston Woven Hose & Rubber Company located at 24 Hampshire Street

This piece was illustrated by Wennerberg

brake fluids

1943 Ad Bell Telephone Systems High Vacuum Tube Wartime H.D. Arnold WWII YPM1 XGZ7 SubdivisionThis is an original 1943 black and white and grayscale print ad for the Bell Telephone Systems, featuring the first effective high vacuum tube, for amplifying electric currents developed by Bell Laboratiries and Dr. H. D. Arnold. CONDITION This 70+ year old Item is rated Very Fine +. No creases. No natural defects. No surface rub. No tears. Heavy water stain bottom. Product Type: Original Print Ad; Black & White Grayscale Grade: Very Fine +