This wall tile by Heljä Liukko-Sundström is dated 1980 and is called "Portti" in Finnish which means The Gate in English. It was in production 1980-1981.
It is a sharp square with 12 cm sides (4,7in).
The last pictures show some 12x12cm wall tiles with winter themes by Heljä Liukko-Sundström.
Manufactured by Arabia Finland.
Condition: Excellent
Signed: H. L-S Arabia -80