Here's the website where I found it. It's in Spanish or Portuguese or something else I don't understand, and they just title it as Kandinsky.
http://images.google.com/imgres?imgurl=http://amoergosum.blogs.sapo.pt/arquivo/kandinsky-01X%2520(2).jpg&imgrefurl=http://amoergosum.blogs.sapo.pt/arquivo/2004_03.html&h=350&w=480&sz=55&tbnid=lWJ-0onNrwAJ:&tbnh=91&tbnw=126&hl=en&start=9&prev=/images%3Fq%3DKandinsky%26svnum%3D10%26hl%3Den%26lr%3D%26sa%3DN
I can guess that it was done while he was at the Bauhaus between the early twenties and 1933, when Hitler closed it down.
Maybe someone else can be of more help. Do you like it? I love Kandinsky's use of color as well as his creative energy.
I like Kandinsky. It's the first time I've seen that one, too. I like it a lot.
Thanx for the link, I'll see if I can find out more.