All are Riihimäen Lasi, Tamara Aladin's Tulppaani (tulip) series designed in 1971, production years 1971-1976
The blue one is number 1516.
(the other green one is design number 1512)
All of this series only in height 20cm.
Btw, I don't see what the hooped numbers 1515 and 1516 have to do with "tulips" as clearly the others, 1512-1514, do, but still, that's only my opinion.
:sun: