Box originally had 6 locks but one is missing.  5 locks total.

This Master Lock #5 commercial maximum security keyed alike box of 5 is a great addition to your home security. The padlock is made of laminated steel finish and has a shackle size of 5/8. It comes with two keys and is designed with a key lock mechanism. The custom bundle option is available for this product. The model number is 3252 and it is a new old stock item made in the United States.