Armstrong No 3 Glass Insulator - Clear Glass - Small - Vintage

Vintage Armstrong clear glass insulator. Markings read Armstrong No 3 - Made In USA - 39.56. Approx measurements are 3 1/2" tall and 2 1/2" wide. Has no chips or cracks. Insulator is smaller than normal ones, most likely used for telegraph lines. Please refer to all pictures as description of condition. +Quick Shipping - Within 1 Business Day