2000年不丹王国政府20努尔特鲁姆。样票。TDLR 印制。银行名称水印。红色样票加盖,蓝色序号。BHUTAN. Royal Monetary Authority of Bhutan. 20 Ngultrum, ND (2000). P-23s. Specimen. PMG Superb Gem Uncirculated 67 EPQ.Printed by TDLR. Watermark of bank title. Seen with red specimen overprint and blue specimen serial numbers.