Cover franked with 1906 2c orange and 1928 35c green (SG 133 & 304) tied by PORT-AU-PRINCE cds dated 7 FEV 1928 and also by two strikes of red 'LINDBERGH' aeroplane cachet. Cover has nice 'Boy Scouts de la Sentinelle D'Haiti Siege de la Societie Port-Au-Prince' cachet in blue with 'Fleur de Lis' scout emblem on front along with airmail label and straight line REGISTERED in purple with handstruck '80488' registration marking. Addressed to USA carried on the 'Lindbergh' goodwill visit flight with transit and arrival marks on reverse. Scarce. (Muller #13, rated 1750pts)