Nice, Adam, I like it too!
"Kallio" (="Rock") produced 1969-1984 is found in different shapes/sizes too. Colours green, purple, blue and brown all more or less gradually turning to clear.
There are also other vases - at least "Petäjä", "Käpy", "Pahka" and a tankard that all belong with it to a so called "Natura" series (which was later produced under the name of Humppila).
So you may have started another collection! :thup: