Horizontal Watermark – the picture of Princess Marie Louise in a 32 mm circle Obverse – the coat of arms on the right, the picture of Tsar Boris III on the left, a watermark in the middle; background .. Read more »colors – brown, green Reverse - the figure “500” in a vignette on the left, a sheaf of corn and a sickle on the right Artistic design – Alexander Bozhinov, Vasil Zahariev Printed in Giesecke & Devrient, Leipzig, Germany In circulation from October 1942 to 16 March 1947.