Here's a great threadless signal that was common on the Transcontinental railroad. Blue (although not as blue as the photo). Some aqua, so probably more accurate as blue-aqua. Some minor condition issues. About a 3/8" impact chip on the upper wire groove. A 1" thin, flat base rim flake/chip totally confined to the rim. The base is worn flat from about 75 years as a door stop (so it sits great!). Flake or nick here or there, but hey, it's 148 years old! Historic, must-have affordable threadless that displays mint from several angles. Photo shows worst side.

$185 shipped and insured to the lower 48. Get one before the prices go up. Satisfaction guaranteed or full refund including shipping.