民国三十年航空救国劵美金一佰圆,PMG55,少见。China, Patriotic Aviation Bond, for USD$100, 1941, serial number 001887, red, aeroplanes at centre, black Chinese text on reverse, signed by Kong Chang Hsi, the Minister of Finance,PMG 55 About Uncirculated, the highest denomination of this issue and very rare in this high grade