I received this insulator for Christmas. It was picked up by somebody who doesn't know much about them, only that she knows my habit needs continuous feeding. :)

Appears to be a WT #1 in a funny color - a light greenish aqua under those coily fluorescent bulbs that screw in, and a bluish light aqua in a north window. The embossing is what makes it interesting.

(F-skirt) WHITALL TATUM CO. {WT in a triangle} (R-skirt) 10 / No 1. MADE IN U.S.A.

See the next picture up (The Gift... Part 2) for the gory details.