Absent better images, I agree with Dean that is a spectacular 4 Iron Turkish Star pattern.
Not the best pic, but something like this
![](http://pic20.picturetrail.com:80/VOL1373/6511424/18059733/388400431.jpg)
Dr. Gaddy's example segment. Note the straight ribband edge welds and rod 'zipper' welds (thank you Steve Culver for 'splainin' that
![smile smile](/forums/images/graemlins/default/smile.gif)
)
![](http://pic20.picturetrail.com:80/VOL1373/6511424/16082038/386005555.jpg)
Parker refinished by Brad Bachelder
![](http://pic20.picturetrail.com:80/VOL1373/6511424/16082038/410237067.jpg)
It is unlikely that such a sophisticated pattern was originally on a c. 1860s British gun, so it may well have been rebarreled and finished in "black & white" (also atypical) at a later date. The proof marks should be interesting.