In the late 1970's, I purchased this insulator from a local PA insulator collector. He said that it was found on a Pennsylvania Railroad (CONRAIL) telegraph line that followed Route 14 /15 out of Williamsport, PA Nothward. Route 14 /15 splits at Trout Run, PA and the RR line follows Route 14 and essentially runs on the East side of Lycoming Creek. This insulator was found on the telegraph line section between Narrow and Bodine Mountain.

Back in the late 1970's through the 1990's, I would take a weeks vacation every year (the last week in April) to fly fish with three friends in upstate PA. During this week, I would also pursue my two other hobbies - fossil hunting and insulator hunting in the Pennsylvania Grand Canyon area. For several years, I would take Route 15 upstate through Williamsport and took Route 14 to Route 6 (Army of The Republic Highway) at Towanda, PA before heading West toward my fly fishing areas. I actually found this telegraph line, but did find any CD 133.2's; however, there was an abundance of CD 162.5 "B" /PRR insulators in various aqua colors. During the early 1980's, Lycoming Creek flooded out the PRR /CONRAIL track and this railway line was abandoned.

The details outlining the embossing on this isulator is as follows:

CD-133.2 No Embossing - MLOD - Glass Button Under Dome - Crude Blue Aqua - Measured 75 mm Wide x 105 mm Tall. It was interesting to note that there was a 12 mm high (3/8 ") cavity above the insulator threads. To me, this looked like a typical American Insulator / Oakman cavity above the threads.

I will also post a picture of the threads and dome cavity and a picture of the internal glass button above the threads [id=609105277] [id=609105650]. I've also posted a picture comparing this CD 133.2 with the Canadian variant [id=609106571].

Note: I received e-mail asking if this insulator might be manufactured by Lindborough. I am not familiar with Lindborough manufactured insulator so can't comment - what to others think about this suggestion?