Awesome...I was beginning to wonder if you would ever come back.
That's a nice looking safe. It was made by Silas Herring. It doesn't have either of the locks I was thinking of. I believe the one on your safe is the predecessor to the 1848 Herring grasshopper lock. Could we get a close up of the keyhole? I'd like to know which way the levers are oriented, or if they are obscured from view
Here is a very similar safe with the same locks.
http://www.prices4antiques.com/Safe-Herring-Silas-Salamander-Safe-Wilders-Fireproof-Patent-Key-Lock-Drawer-Fitted-Interior-36-inch-E8928691.htmlAnd the original website.
http://theantiquesafecollector.com/antiquefloorsafes.htmlAnd your exact safe.
http://www.officemuseum.com/IMagesWWW/1843_Wilders_Salamander_Safe_Kevin_Forrey_detail.jpghttp://www.officemuseum.com/IMagesWWW/1843_Wilders_Salamander_Safe.jpgDo you care about the safe? Do you want to reuse it? Just an FYI, in 99% of these situations the safe is empty.
The only options I see for getting it open are hiring a locksmith, or destructively opening it yourself, or looking for the key. The locksmith likely wouldn't be able to get it open non destructively though either. Since the drill points would be unknown, it would probably end up looking like swiss cheese. I'd hate to see such a nice lock get destroyed, and I'd even offer to buy it from you if you ever get it open.
There aren't any quick and easy ways to get into this safe, especially with the lock being unknown. I hope this was somewhat helpful.