"Is this the make of the engine marker lights with those sexy vertically segmented glass lenses"
Yep, those were called Radial Classification lamps. The Radial is descriptive of the radial shaped lenses. They had a green and a red lens, but I think they could show white also.
In the H-B catalog it had listed a #26 Radius Engine Lamp, and a #90 Radius Engine & Tender Lamp, and they both look just like our beloved lamps seen on all the D&RGW and RGS locos.
I think the CRRM bought some "new" versions of the lamps (same as the old versions) for use on the locos there on static exhibit, because in "Narrow Gauge in the Rockies" Beebe, there is a photo the smoke box of RGS #20 that clearly shows a brand new "spotless" H-B Radius Radius Lamp mounted on the smokebox door and it was monogrammed with the letters D&RGW on the bottom portion. This leads me to believe thaw we could have bought a new lamp with our names on it at a bargain price back pre-1995! Damn that hurts!
Photo of #346 at the CRRM, showing the Radius lamps from Brain Soloman's book "Narrow Gauge Steam Locomotives" offered by; MBI publishing
The lamps shown on #346 are still in their full height original "kerosene burning" versions. later versions had their tops shortened for their conversion to use electric power bulbs, thus the lamps got shorter, and much uglier!
David