1936 Mexico Newer & B/B Covers

5931- 1915, INTERESTING POSTAGE DUE COVER, .10¢ PAID WITH #348

5936- 1930, WITH FIVE DIFFERENT REVENUES USED AS POSTAGE

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

5948- 1938, PORT OF CALL, AT SEE OF ACAPULCO – U.S.S. POMPANO

5941- 1933, CERTIFIED WITH 2 AIR MAIL STAMPS + 1 SURFACE STAMP TO GERMANY