That would be cool, but I don't think that is an antique bore. Rebore? Would be a well preserved survivor, if so.
Yes excellent bores in percussion & flint era firearms are rare, especially in today's marketplace.
I currently own 2 Jeagers, one flint era with near mint bores & a few pistols as well with excellent bores. These are whats left of what I acquired 40-60 years ago.
Fortunately over the past centuries there has been a few shooter/collectors
like myself & others on this forum who have taken exceptionally good care to preserve these firearms so the next generation can enjoy shooting these connections to history.
Over the past 60 years I only kept & fired antique firearms that showed prior use, those in mint or near mint condition we sold to collectors who just display them.
Paths of Antique Firearms;
Some 50 years ago as a young man I purchased a collection of about 200 European firearms from an elderly retired army officer in Little Rock, this is the story of his collection...
When Germany was occupied by U.S. forces he was ordered to collect & destroy all firearms including those in museums. He stated he was told to destroy by laying them on sidewalk curbs & running over them with half-tracks or tanks.
Being an avid young gun collector & Officer he said he couldn't bear destroying many of the museum pieces so having the means to crate & ship he shipped some of the best to his wife back in the U.S. Many other military & antique firearms also found their way to America in GI's knapsacks.
Young history buffs like myself lucky enough to grow up next to military installations & veterans in the West provided us with endless sources to inexpensive semi & full auto unmentionables, ammo & all the neat old guns of the western frontier that our lawn mowing labors & allowances could afford..
Relic shooter
Now we're the relics