1929 Mexico Newer & B/B Covers

5936- 1960, #909 ON FIRST DAY COVER, NICE AND CLEAN

5930- 1918, CANANEA, SONORA TO NOGALES, WITH BACK STAMP, 5¢ POSTAGE DUE USED AS POSTAGE. NO BACK FLAP

5927- 1922, YUCATAN (2) #2’S, LARGE MARGINS, CAMPECHE TO MERIDA, ABIERTA POR EL CENSOR LABEL

5951- 1935, PORT OF CALL, LA PAZ, U.S.S. CUSHING

5929- 1913, CANANEA, SONORA, LONE POSTAGE DUE ON COVER – GREAT COVER TO NOGALES,