Topic: Heavy clear weight, help please.

[keith]

Little over 3 inches tall, 4.5 wide, lots of wear, concave base,any ideas please ? 

[w8happiness]

Hello,

I have seen similar "glass bricks"- square as well as round shape- mounted
 in concrete walls or roofs for ceiling day-lighting support, and as industrial
windows, if used in rows. Maybe an architect can sort out what kind of function it had?

kind regards, E.

[keith]

Thanks E,