Featured ANTIQUE OR VINTAGE SLAG GLASS LAMP SHADE? NAME OF SHAPE?

I bought this beauty from a little old lady's yard sale for only $30. She said it's been hers for decades.
Should I call it a antique or vintage?
What is the shade's shape called? My first thought was "tulip" but that was just stream of thought first impression.
I appreciate any help.

 

Hi,
Looks very 1970 to me.
greg

 

The cloth covered wire looks pre WW2 to me I would say 1920s-30s. The glass type is called cathedral by the makers and stained glass by hobbyists. It is the type used in stained glass windows. Today some call it slag which refers more often
\to molded shapes rather than sheet glass.

 

It's a shame it has the broken glass and the bent-out lead came, it would be expensive to fix

 

that cloth covered wire...original to the lamp.....dates it..to the 50's , or 60's............

 

That cloth covered wire is plastic covered at the core so probably 50s-60s. Still being used in fixtures from that era, while phased out as lamp cords.

 

Hi Brad,
Thanks I thought I was losing it.
greg

 

It's not glass, like stained glass ...glass, but like...slag glass! Does that make a difference?
What is that shape? I could not find another like it - hoping the sleuths here could!

 

Many glass artisans prefer the term "leaded glass" because "stained glass" is sort of a misnomer. Most of the glass windows and lamps one sees are leaded, but do not involve any "staining," a term reserved for images painted on the glass and then fired before assembly. So I'd actually call this a "leaded-glass shade" without mentioning the particular type of glass.
Many glass artisans are quite good at restoration, and it isn't as pricey as you might think. If you have a glass shop or artisan in your area it might be worth taking this to them for an estimate.

 

Suspect some non-Tiffany shades of this type have been represented as favrile glass.

 

favrile? They almost has a plastic feel to the glass - not brittle like real glass

 

They may be plastic try the hot pin test. Pittsburgh Plate Glass and Libby Owens Ford called this glass Cathedral Glass after the windows in cathedrals. I worked for PPG in the 50's

 

I haven’t seen LOF mentioned anywhere in a long time.
I know who they are.
Family must be billionaires.