Horizontal Watermark – none Obverse – the coat of arms on the left, the picture of Tsar Boris III in military uniform on the right; background color – blue Reverse – fragment from the picture “Sofia M.. Read more »arket” by Anton Mitov in the middle; background color – green Artistic design – Alexander Bozhinov, Boris Denev, Konstantin Shturkelov Printed in Bradburry, Wilkinson & Co, London, England In circulation from 1925 to 31 December 1933.