On the left is a Hemingray CD 121 [160] with the Am Tel & Tel Co embossing blotted out. The Am tel co blot out is lower than the embossing usually is on [110] Am Tel Co tolls On the right is an Am Tel co CD 121 [110], with the exact same profile as the hemingray, though no drip points.

Both of these lack dome numbers, have the same style of embossing and pretty much have the exact same shape. I think its safe to say that most of these [110] tolls are of Hemingray mfg.