El Sorprendente Hombre Arana #47 is a "reprint" of Amazing Spider-Man #27 which is a key issue due to the death of the crime master. I don't know if this is an actual reprint or if it was just the Spanish-translated version released at nearly the same time. Inside the book, it indicates a print date of November 1965, which is two months after ASM #27 print date.