Hong Kong/China 1937 attractive pictorial FFC (long), regd, HK to Peiping (Peking) by Eurasia Aviation Corporation (plane over map of eastern China). Franked HK 1937 Coronation set of 3 & 12c GV canc HK d/s 29 JU 37. Canton transit d/s on front, b/s 2 Peiping cds "30.6.26"& "31.8.26". "P.53a" printed PO slip (with "UNCLAIMED" h/s partially stuck to back. Light vert crease by left edge, small metal clip marks, & perf tone on regn label, otherwise nice cond.