1915 Peking 1st print Hall of Classic 1st ovpt. Limited For Use in Sinkiang, with second and third ovpt characters transposed variety (Chan PS16a), unused with original gum. With BPA certificate.
On 1 Jun 1915, General Office overprinted “Limited For Use in Sinkiang” on Peking 1st print Junk issues. However, second and third overprint characters were found transposed in one plate of the $1, and only about 10 have survived. It is known as one of the “Four Treasures of the Republic” (民國四珍).
1915年北京一版宮門第一次加蓋「限新省貼用」新，帶誤蓋「限省新貼用」變異（陳目PS16a），原膠，附BPA證書。
1915年6月1日，總局於北京一版帆船票上加蓋「限新省貼用」。但當中一版之1元被發現帶有誤蓋「限省新貼用」，存世僅約十枚，被稱為「民國四珍」之一。