Mike Miller published an article entitled 'They Had To!' starting on page 32 in the November 2002 issue of Crown Jewels of the Wire magazine where he identified 4 distinct AM TEL & TEL CO molds. He believed there was strong circumstantial evidence that these pieces were a product of the Western Glass Manufacturing Co. of Denver, Colorado. These correspond to the CD 121 [095] (F-Skirt) AM TEL & TEL Co {Note no periods} SB in the price guide. I take no credit for Mike's research. I am posting a picture of an example of each mold for reference. Use 'View Original' to see the embossing in detail.

MOLD IV - Intermediate dome. Abrupt transition upper wire ridge to dome. There is a series of circles on dome from 1" to 1-1/8" in diameter. Embossing is 2-7/16" long. The" &" is large and slopes left.