used  6d. black-brown, a large example with three complete rows of roulettes inside the design, cancelled "6". Photo
used 6d. black-brown, a large example with three complete rows of roulettes inside the design, cancelled "6". Photo

細節
used 6d. black-brown, a large example with three complete rows of roulettes inside the design, cancelled "6". Photo
來源
Maurice Burrus, 1963