Issue #-1 was published between #424 and #425.
Between #406 and #407 (November-December 1995) this title went on a hiatus and was replaced with "The Amazing Scarlet Spider" #1 and #2 (
www.comics.org/series/10341/). This was the case for all four Spider-Titles during these two months.
The 441 issues in this series (#1-441) are considered issues #1-441 in "The Amazing Spider-Man" Legacy [LGY] numbering.