After much digging, PJ, I think I am where you are. The car is apparently Russian, and associated with one M. Yegorov. Yegorov appears to have been the designer, and, perhaps, the builder, but here my trail ends. This information is from a very short teaser for a complete article contained in a past issue of the Russian "Historic Automobile Magazine", which is advertised for sale for approx. (price varies with several sites offering this issue) 500 rubles. Since I don't have 500 rubles to spend, perhaps some of our Russian AutoPuzzlers can access additional information regarding this vehicle.