Horizontal Watermark – rampant lion Obverse – the coat of arms on the left, the picture of Tsar Boris III in military uniform on the right, BNB red seal in the middle; background colors – green, brown.. Read more » Reverse – the picture of Hristo Botev in a vignette on the left Artistic design – Hristo Lozev Printed in the State Printing House, Sofia, Bulgaria In circulation from October 1924 to 1925.