Hallyu celebrity Jang Keun-suk's commemorative stamps will go on sale in Japan on the the 20th anniversary of his debut. Jang, 25, started his career as a child actor. An official of TreeJ Company, Jang's agency, revealed on Aug. 10 that the Japan Post Co., Ltd. will start the reservation sale of "Official plain stamp set in commemoration of the 20th anniversary of Jang Keun-suk's debut" on Aug. 20. The official added, "It will be the first time that Japan Post has sold an official product made by a Korean artist." Jang's stamps will go on reservation sale at post offices and post websites throughout Japan starting Aug. 20. The stamp set consists of two forms, one "1st History" that covers Jang's childhood and youth period and the other "2nd History" that depicts his life from his adolescence to the present. The stamp set includes postcards, envelopes and stamp folder with stickers as previously undisclosed photos of Jang. Meanwhile, Jang is now on the "2012 Jang Keun-suk Asia Tour". Tickets for his performance in four major cities in Japan, including one in Yokohama, have sold out. Jang decided to add one more performance in Saitama. The official of his agency said, "Due to fans' request, we decided to hold Saitama performance for three days Nov. 26-Nov. 29 at Saitama Super Arena as finale of the tour"