Horizontal Watermark – an upright sheaf of corn with a sickle in a 34 mm circle Obverse – the coat of arms on the left, the picture of Tsar Boris III in military uniform on the right; background color.. Read more » – violet Reverse – a view from Veliko Tarnovo Artistic design – Alexander Bozhinov, Vasil Zahariev Printed in Thomas de La Rue, London, England In circulation from September 1940 to 16 March 1947.