Puzzle Post Card - Man Smoking Cigar / Skull Illusion

Front:
IF MORE THAN SIGNATURE IS WRITTEN BELOW, TWO CENT STAMP MUST BE USED LOOK AT THIS CARD SIDEWAYS, FIRST FROM ONE SIDE, AND THEN FROM THE OTHER PATENTED OCT. 23, 1908, M. C. J. DEEKS & CO., PATERSON, N. J. 6-5-07 Look at it side vise не er had better pend some letter Mid therwill be something dow

Back:
1601 RECO !!!! OFNN ED STATES AMERICA SERT 1732 1902 1799 Fred L. B. Stock Fonse So. Pasadena Box 415 California