I would agree that makes sense!plehbah said:It seems to look like a lantern top to me, and the "Solar" name would be a logical connection also.
This is what I came up with:
http://www.prices4antiques.com/lighting/lanterns/Lantern-Bicycle-Badger-Brass-Co-Solar-Model-S-Carbide-Safety-Lamp-D9829282.htm