Hi
If you can remove one of the locks you could take it to a locksmith and they should be able to make a new key. I suspect the other locks just need cleaning and/or lubricant to get them functional. At least in my former small city (Eureka CA) a local locksmith was able to make a new key for a "skeleton" key for under $50.
Rich
------------------------------
Richard A. Paselk,
Professor Emeritus, Chemistry Dept.
Curator and Webmaster,
Robert A. Paselk Scientific Instrument Museum
Humboldt State University
------------------------------