Bidspirit auction | Lot of 20 Concorde-themed flight

Lot of 20 Concorde-themed flight covers, 1977-1985, British Airways and Air France: inaugural-flight covers on international routes (among them Riyadh-Bahrain, London-New York, Paris-Dublin, London-Nassau), and a cover marking the marriage of the Prince of Wales and Lady Diana Spencer (1981). Include event cachets and stamps. Units in lot: 20. Various conditions.