I would consider this period being beneath the o of Co and error. Would you? Don't know how there would be any other ebossing errors with AM TEL tolls. Unless letters were the wrong ones or upside down. This one is on a 080 EIN (front crown # 5) Anyone else have one?
I sold the above insulator. If anyone else has one Bob MacHann is looking for one with the same embossing error. You should be able to find his email address in the member information list.