I remenber them. They had a sort of cup for a top lid that had a small hinge on one side. I remember the brass one that came with a red velvet sleeve to store it in. I always wanted one, but never got around to buying it. If it came from UCO, and I think it did, they might have some info on their website.
As far as led goes - I use one every trip, but in winter there is almost always a red UCO hanging inside my tipee. It provides warmth, reduces condensation, and I like the dancing flame.