The 1901 "America" lock is a warded brass padlock which in good condition can be worth $25-35 or more. Some locks dated 1901 are commemorative or souvenir locks of the Pan-American Exposition (world's fair) which was held in Buffalo, NY that year— and they bring much higher prices. However, this lock is not generally considered to be expo-related, as it would be if it were embossed "Pan-American" rather than "America."
The big thing in the top of the photo looks like the locking mechanism for the door, as PBK says. It would be unlocked with a skeleton key. So go back and find that key!!!!!! Nice locks.