It's not possible you lot are stumped. It cannot be. Someone knows, but has not looked or replied. Do I win a cookie?
I'm now thinking it's too dark for any sort of glass brick anyway-- it just doesn't pass enough color. I have some pretty dark glass bricks, but this is darker still than any of them.
It has that interlocking design... is it just part of a desk/dresser set or trinket set or whatever they're called?
Because of the interlock, several of these could be placed right next to each other in a row, holding.... trinkets?
I have yet to find any glasshouse named Coughlin, also...