Bought this at a boot sale a few weeks ago, so far the only other example I have found is a taller variation for sale on ebay, like me the seller is in the dark.
Construction is fairly chunky, although it is only 12cm tall it weighs nearly 1kg. Some specks of ash in the base which has a couple of concentric rings ground down and polished flat - ring any bells?
Bit out of practice with my camera these days, not exactly like riding a bike...
John