Bidspirit auction | Worldwide Aerophilately - Bolivia

Worldwide Aerophilately - Bolivia - 1930, Zeppelin issue, surcharge and overprints on Aviation School issue in various colors, 5c/10c, 10c-1b, set of six values without #C13 and C17, full OG, mainly LH, VF, the high value with several experts' hs on reverse, C.v. $450 , Sc. #C11/18