1943年8月19日巴縣寄美國航空封,貼烈士13分改為20分票一對,另加十四元郵資,銷巴縣日戳,信封邊口有英國檢查封條,並轉遞往蒙特克萊爾,銷10月22日紐約機蓋戳,又此封特註明為單掛號,品相中上.China — West Szechwan; 1943 (19 Aug.) air mail envelope to U.S.A. bearing pair of 20c. on 13c. and additional $14 tied by Bao Hsien c.d.s, British censor seal at side and redirected to Montclair bearing New York machine postmark (22.10). The envelope is marked " Single register" , there is a vertical folding crease. Photo