Vintage/Antique Clear Glass Electric Insulators Set of 4, Hemigray, Ar - $30 (So. Portland)

HEMINGRAY 42 & 45, Whitehall Error (Whithall) & Armstrong GLASS INSULATORS; CD's # 155, 154, 167 & 115.
There is a significant chip to the Hemingray 42, some (rust?) etc.
stains to the Hemingray 45 as well as a significant straw mark to the exterior.
All insulators exhibit chips, nicks and scratches appropriate to their age and use.
I have captured the details as best as I can in the photos.
Cross posted.