A pair of skirt embossed Am Tel & Tel Co tolls with MLOD. They have different profiles. The one on the left doesn't seem to be of Brookfield manufacture. At least to my eyes. The one one the right does look to be a Brookfied product.

Mistakenly grabbed the wrong insulator for this photo. The one one the left is actually a prismic embossed Hemingray variant. My bad.