Replica 1860s-era Glass Telegraph Insulators
Hand-blown by a glass artist using an actual 1860s Wade glass insulator in the Fort Caspar Museum's collection. Produced by the Fort Caspar Museum Association in 2013.
These are embossed "F.T.C. 2013" on the lower skirt.
Currently on sale here: http://www.fortcasparwyoming.com/museum_store