Featured Harvard Lamp Shade Question

Just got these shades for this Harvard student lamp, and I have to say that they look pretty good! But the question is: are they antique or reproduction? That they look good matters most, but we antiquers like to have the "real deal." I was assured that they were "vintage," as in more than 50 years old, but I'm not sure that helps a whole lot. Anyway, your wisdom is appreciated!

 

Are they cased.... meaning a two layer glass, yellow over white. I have a repro pair of these in green which is a painted process. A good pair of antique cased shades can be pricy. My newer pair look good, but real cased shades will definitely be nicer.

 

@Drew Definitely yellow over white, but appears (?) to be painted (?). The marks on the rim are brownish and look to be abrasions.

 

I don't know.......... but they sure look good !!!!!!!!!

 

The clear distinction of yellow and white glass seems it would be 'cased' with no paint. A further test is to see if paint can be scratched off the outside. it's difficult to tell from the photos . . . a person near you who knows glass could tell in a second which they are. At any rate, it's a wonderful lamp and the shades do look good on it.