Thread: "Rodgers Cutler to Their Majesty.." Date?

Recent eBay acquisition. Will need to do a restore on this stubby? Can't make out a JR logo on the tang but states "Rodgers Cutler to Their Majesty". I like the fact that it has top and bottom jimps and wedge may be original (not reground). Will try to save the horn scales with some neatsfoot oil soaking and some CA glue. Will need to reshape the damaged scales a bit as well. Will then do some rust clean up on the blade. Hopefully, most of the rust will come off and it will take an edge. Any guesses on the age of this old beauty? 1820s would be my initial guess, but would welcome other thoughts and comments. Thanks