Album weeds : or, How to detect forged stamps (1882)
Earée, R. B · London : Stanley Gibbons · leaf 420
408 ALBUM weeds; OR, ST. SALVADOR. Issue of 1867. |, 1, 2, 4 Reales. Genuine. … In the ^ real the background, outside the central oval, is entirely filled up with vertical rows of the fraction " -| " very often re- peated. In the 1 real the said background is composed of repetitions of the word " UN." In the 2 reales the background is formed by repetitions of the word " DOS."…
Postage stamps
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
