Austin-Putilov armoured car made by MKI the Moscow Toy Plant, it's plastic and looks like the chassis and turrets have been produced in blow moulds. Collector Aleksey Dmitriyev in Russia tells me that it was made in the 1970's or 80s, it feels much earlier to me but there you go, I know virtually nothing about Russian toys, except that I like them! I found these pics while idly searching the net (as you do) and fell in love with it, so I thought I'd share it.
You can just about make out the makers mark on the right. If you want to buy it you'll find him on Meshok.net which is a kind of Russian ebay current bidding is just over £106 good hunting.