JAPAN (1992) Takakazu Seki*. People of culture issue overprinted MIHON (specimen). Seki was a 17th century mathematician noted for his study of circles. Scott No 2147, Yvert No 2012. Scarce!
AVAILABLE AT $20
JAPAN (1992) Accountant's emblem*. 50th anniversary of CPA system overprinted MIHON (specimen). Scott No 2149, Yvert No 2014. Not easy to find!
AVAILABLE AT $20