Can anyone provide any info about these glasses I bought this weekend at a glass "flea market" up norht in Sweden

?
They claimed it to be Kosta glasses from either the 20's or 30's. Dont know if thats accurate.
The same glasses are displayed at a table spread at the Carl Larson museum outside Falun.
I loved this crystal and got 27 glasses at a real good price. Red wine, white wine, and two smaller sizes for cognac or such...
Attached a picture of the red and white wine glasses.