Sc.4CL8/4CL10, 1930 Zeppelin flight to USA, cmpl. set of 3 overprinted values, MNH, the lower values perfect, but the 20000R stamp has a very light stain on gum. Catalog value of the 2 perfect values, MNH, is US$450 (without the high value, which was not considered in the start price either), good opportunity! (Image)