Bell System Telephone Operator's Lamp Shade /NR

I have here a lamp shade with the raised bell which has Bell System. I am not sure how this shade was attached or if it had a lamp base. I lean toward it being mounted to a wall as I do not see a mount for a base. There are a couple of holes at the back and a hole with a grommet for the cord to come through. There is a pull cord socket which has a porcelain chain pull at the bottom. The shade is pressed steel which is painted brown on the outside and white on the underside. This could have been a shade attached to the wall of a telephone operator. I have not see one of these before. It measures 12" wide2 7/8" high and 3 11/16" front to back at the bottom. There is some scratches and a little paint loss and the underside could use cleaning. This could be a hard to find telephone shade. I am offering it as found with NO RESERVE. Buyer to pay actual shipping. The shade will weigh 3 1/2 pounds packaged from zip 64111. Payment expected within 7 days of close of auction. Thanks!!

I was informed this lamp went inside one of the old wooden phone booths for viewing the directory and dialing the pay phone at night.