Chagall hand pulled litho?

Hi all,

Do you think this is one of the alleged 5000 unsigned “bouquet a l’oiseau” by Chagall as seen here: https://www.ebth.com/items/6675993-marc-chagall-hand-pulled-lithograph-bouquet-a-l-oiseau


What decade does the frame look like to you guys?

The matting does look quite old and has some stains which in this case are encouraging perhaps?.. I didn’t use a magnifying glass but it didn’t seem to just be a mass print situation...

Pics are bad, sorry.

 

Pretty generic frame. 1970s-ish to my eye.

Debora

 

those look like old glazers points used to hold the mat......
never seen that from a professional framer.........