Item No. lam391.

Drinking glass, Prisma. Design, Kaj Franck, Nuutajarvi.

Height 11.5 cm, diameter 8 cm, weight 452 g.

Prisma series was designed for fully automatic machines for production. It was the production of 1967-79 and again 1987-90.

https://en.wikipedia.org/wiki/Kaj_Franck