Can someone help me ID mark on stained glass shade

[wearitsatvintage]

I bought a pair of these nice stained glass shades. 

They are nice quality (good glass) and appear to have some age to them.

They are stamped "SGC", the S and G are definate and the third appears to be a C

Does anyone recognize this maker?

What would be the best term for this type and shape of a shade.

It is 5 1/4" long x 5" across wider opening.

thanks!!!

[md1919]

looks like hobbyist/classroom work to me.

[jahya0]

I've got a set of 5 of these.  All marked SGC.   I've looked but can't find a manufacturer either.  I found mine in Reno in late 2015.

[bnbsellingtime]

Taking into consideration that another poster found a set of five just like this I tend to think they are from a modern ceiling fan perhaps. The workmanship is a bit haphazard rather like one might expect in a modern import item IMHO.https://www.google.com/search?q=stained+glass+ceiling+fan&source=lnms&tbm=isch&sa=X&ved=0ahUKEwipsaK...