used  NO. 20 (La Brea): 1852 (Sept.) Litho, fine impression, yellowish paper, (1d.) blue with close to good margins, superb strike; small thin. Extremely rare. Photo
used NO. 20 (La Brea): 1852 (Sept.) Litho, fine impression, yellowish paper, (1d.) blue with close to good margins, superb strike; small thin. Extremely rare. Photo

細節
used NO. 20 (La Brea): 1852 (Sept.) Litho, fine impression, yellowish paper, (1d.) blue with close to good margins, superb strike; small thin. Extremely rare. Photo
來源
Charlton Henry, 1961,
H. Kanai