This is what I have on the builder, John Selah Vosburg, I don't know when the gun was made, hopefully it falls within the ALR guidelines.
Served in the 17th N.Y.L.A. (the Orleans Battery) in the Civil War. Was Adjutant General of the Arizona Territory 1873-75. He was a gunsmith who became wealthy after 'grubstaking' a prospector who had been told that all he'd get in Arizona was his tombstone. He found silver, and Tombstone, Arizona got its name!
From another source, probably more accurate.
John Silah Vosburg was born in New York in 1840. He became a gunsmith and decided to
move out West. He arrived in Tucson in 1870 and set up a gunshop. He served in the
Arizona Legislature in 1873 and became good friends with Governor Safford. In 1873,
Safford appointed him as Adjutant General and he served in that position until he was
named Territorial Auditor in 1877. He resigned from the position when the capital moved
to Prescott in 1877. He and Safford were important in the financing of the Tombstone
Mines, financing the Scheffelins and Richard Gird. When Vosburg sold his share of the
mining operation in the early 1880s, he made $147,000 and moved to Los Angeles. He was
divorced from his first wife, Kate Slauson, who was the mother of his three sons and later
married Anna S. McCrilus (1862-1948). Vosburg died in Los Angeles in 1931.
The gun was broken in half when my friend acquired it, he made the repairs to put it back together and tried to make them period correct looking.
The lock has what appears to be C Baker engraved on it.
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