O) 1937 GUAM, USA POSSESSION, GUAM TO MACAO MARK IN RED, THE CHINA CLIPPER OVER THE PACIFIC SCT C21

O) 1937 GUAM, USA POSSESSION, GUAM TO MACAO MARK IN RED, THE CHINA CLIPPER OVER THE PACIFIC SCT C21, LINBERGH´S AIRPLANE SPIRIT OF ST. LOUIS - SCT C10, CIRCULATED TO USA