1937 MAIL SHOTTON, CHESTER TO ARGENTINA SEAHORSES 2/6D (SG450) AND 10S (SG452) X 4. Envelope (280 x 127) Shotton to Buenos Aires, Argentina with 10s re-engraved Seahorse (SG452) x 4, 2/6d Seahorse (SG450) also 6d purple (SG426a) and 1s photogravure (SG449) cancelled SHOTTON/CHESTER date stamps 12 JA 37. Slight imperfections and soiling as expected. Via German route with good strike "DEUTSCHE LUFTPOST/EUROPA-SUDAMERIKA" cachet in red and on reverse BUENOS AIRES receiver 17.ENE.37. Unusual and rare franking. (Ref 104815).