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Most likely, the one insulator seen up close, with some clarity, is a CD 102 Brookfield ...
what is known to collectors as a "CREB", or CRown Embossed Brookfield, like this one:
However, one of the things that makes Colorado narrow gauge era history so much fun
from an insulator collecting standpoint, is that the region used a pot pourri of different
manufacturers' goods and the variety is about as good as it got ANYWHERE !
Two very rare types of early 102's were also found around the region. One (on left) is
totally unmarked and no one has the slightest idea who made it:
While the other has just the marking "Pat'd" embossed on the base. This type was linked
to an obscure mfr., Cadiz Glass Works, in Cadiz, Ohio in recent years, after the site was
developed for a petrol station and the remains of 1000's of broken ones were littering the
site.
The CD 102 (a modern collector-created style numbering system) first appeared in the
July 1878 Tillotson catalogue:
It was essentially a shrunk-down version of the Western Union "Standard" insulator
(CD 126) as seen in these photos:
Here, at the Alpine Tunnel snowsheds, 1884, and:
Here, along the D&RG mainline in the Arkansas Valley.
Other options could be this one-known unmarked purple dude:
Or even possible this Hemingray No.8 ???
I would put money on it being the first option, the common Brookfield
unit. I found lots of them all over the area. But who knows ? Given
the period of development, it was the heyday of small glass works and
suppliers. Maybe it was a super exotic Westinghouse No.3 in peacock
blue ???
"Duty above all else except Honor"