Thanks to all for your responses!
Yes, I did see that nasty orange spot inside the muzzle and took care of it. No harm done!
Here are a couple of more pics:
There was no engraving at all on the original gun, though there was a little decorative file work. I felt obligated to sign and date the gun, though. The end of the ramrod is tipped with a handmade sheet steel cone, the seam closed by brazing, and tapped to 10-32.
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The nose of the Chambers Golden Age lock is tipped slightly down in relation to the barrel, proper for a Lehigh gun. Touchhole was coned internally with Tom Snyder's coning tool. No vent liner.
Patchbox interior, showing handmade steel spring. (On about the fifth attempt, I got it right.)
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Again, thanks for your feedback! Special thanks to Jim Kibler and Mark Silver, my mentors at the Bowling Green gunmaking seminars, and to Eric Von Ashwege who talked to me at length about Lehigh guns and demonstrated the Violin varnish technique at Dixon's this year.
Gregg