1928 Mexico Newer & B/B Covers

5946- 1935, REGISTERED, (2) 10¢ AND (2) .20¢ PROOFS USED AS POSTAGE, FROM MEXICO TO LONG BEACH, CA

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

5938- 1935, (1) PAIR AND (1) SINGLE ON REGISTERED COVER TO LONG BEACH, CA, PROOFS USED AS POSTAGE

5947- 1936, PORT OF CALL, ACAPULCO, U.S.S. FAIRFAX

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