Actually, it was in better condition 15 or 20 years ago. The fellow who owned it, played with it with all the finesse of a baboon - marking the stock around the barrel wedge escutchions, cheek piece, etc.
When our friend Don. R. saw it 'again' at a gun show, he paid the price just to get it out of the hands of that man. When Don saw it the first time, he noted it looked as if it was just made - and unfired. Of course the fine checking in the finish (& the gun itself) gave it's age away.
My Bro bought it from Don.
The rate of twist is a little fast at 1 in 48", but that makes it shoot well with lighter powder charges.

I was hesitant to post these pictures, but, what the hay. It needs to be seen.

Here is a facsimile of a 5 shot group at 100 metres off the bags. Incidently, we shot this 'match' for "lunch"- Taylor had to buy. My .69 did a bit better, even though I pulled one. Mine were over the 10 ring. Hs rifle, not adjusted since 1853, shot a bit low. Another 20 gr. would have done it. The ball weight for my rifle was 465gr., not .482gr.
His target, not bad for a 166 year old rifle, without ANY load developement. Just an educated guess.