This lump-of-rust 1899 has been my grip fitting mule for 40 years. I took it to the usual Friday night meeting to show my newly acquired pair of mid 1970's Hogue grips, but H. Richard was more interested in my mule.
To the naked eye, the serial number appears to be 01, but, as nice as that would be, I think it is probably 91.
Please excuse the saw dust.
P.S. The lockwork is OK. It's the bore and chambers that are all rust.