Here is an updated photo of my M-2260 collection. Most of these were found on a line in CT along an abandoned section of ROW. Some have a manufacturer's shop mark and most of them have a "Thomas" marking that has a handwritten appearance. Many of these were dug out of a wetland area and needed minor repairs. I have yet to repair a couple more after the cement joints are dissolved with muriatic acid. I started hunting the line in May of 2013 when I first started insulator collecting and my most recent find was in January 2017. Many thanks to Steve Jones who originally got me started on this line!