American Telephone & Telegraph Glass Insulators - Set of 4

Four American Telephone & Telegraph glass insulators style CD-164, approx. 3.75" tall, 2.5" outer bottom skirt diameter, aqua glass. 1- AM TEL & TEL Co. on bottom skirt, reverse 12 on top; 1- AM. TEL & TEL Co. on bottom skirt, with reverse 12 on top with a second fainter 2 between the 1 and 2 of the 12; 1- AM. TEL. TEL. Co. on bottom skirt with reverse 12 on top with a flaw off of the 1; 1- AM. TEL & TEL Co on bottom skirt with reverse 4 on top. See photos.