Bidspirit auction | Worldwide Air Post Stamps and

Worldwide Air Post Stamps and Postal History - Germany - Zeppelin Flights - 1929 (April 23-24), Mediterranean Sea Flight stationery postcard 8(pf) dark blue green, uprated by 100(pf) brown violet, tied by board ''22.4.1929'' cancel, red flight cachet and Seville ''24.ABR.29'' machine marking, mostly VF, drop in Seville mentioned in Frost Cat. only #127-19, C.v. $300, Scott #328