This post shows a CD 736 which was purchased at the 1989 National Insulator Show in Allentown, PA. The previous owner was a digger and indicated this insulator was found in McKean Co. somewhere near Bradford, Pennsylvania on what was thought to be the route of an old New York Lake Erie and Western Railway. The following post compares two E.R. insulators including:

CD-135.5 E.R.W. - MLOD - Ice Blue Aqua (With Bubbles, Micro Bubbles, and a Small Amber Milk Streak) Measurements Are 105 mm High x 85 mm Wide.

CD-736 E.R.R. (Front) N.Y. & (Back) MLOD - Deep Robins Egg Blue - Crude with it's share of chips and cracks. Measurements are 105 mm high x 85 mm wide.