This is a Finel enamel steel waterkettle from Arabia Wärtsilä designed by Antti Nurmesniemi in 1958. It is called Pikku-Pehtoori in Finnish. 
The decorations on the enamel is designed by Gunvor Olin-Grönqvist. The kettle is part of a series of colorful Finel enamel items designed for Arabia Wärtsilä in the 1960s. 
The last pictures show other items of this enchanting series.
The kettle holds 1 l. 
It is 11cm in diameter, and 15cm high. 
Condition:  Very good vintage, with only minor superficial wear