1961印度尼西亚贰盾半, 加盖[西巴布亚省], PMG66EPQ;Indonesia, Irian Barat, 2 1/2 rupiah, 1961, serial number IBG019559, purple on orange underprint, President Soekarno at left, Irian Barat overprinted at bottom right in green, reverse Javanese female dancer,(Pick R2), PMG 64EPQ Gem Uncirculated, issued to replace Netherlands New Guinea Gulden in 1963, one of the key notes for Indonesian collectors on Irian Barat series, scarce