Columbia Main Spring 3/4" (0.75) x .025" x 10' Pear/Pear VV-XVI Educational Resource: The book serves

Educational Resource: The book serves as an educational resource for those interested in the history of graphic design and advertising

tracing its origins from Thomas Edison’s groundbreaking tinfoil phonograph to the sophisticated devices of the 20th century

Material: Steel

"Certified Original" SAAL Bridge Plate for:These are original (used) parts and probably contain characteristics as such

Columbia Main Spring 3/4" (0.75) x .025" x 10' Pear/Pear VV-XVI Educational Resource: The book servesMain Spring for: Bradley; Chum; Cirola; Columbia No 5; Cresent; Davis; Diamond; Domestic; Excelsior; Harmony; Heineman Nos. 32, 36, 37, 38; Majestic; Manophone; Markel; Meteor; Modernolette; Most Portables; Operola; Outing; Pathe III; Vitanola Dimensions Width 3 4" (0. 75) Thickness 0. 025" Length 10' Outer Connection Pear Inner Connection Pear Diameter of Arbor 3 8"