I would be happy give my (somewhat educated) opinion regarding the pattern of your Damascus barrel if you would post images here
http://www.shotgunworld.com/bbs/viewtopic.php?f=5&t=470696

and not here on DoubleGun

I regularly receive images as attachments to emails from the U.S., Eastern Europe and Russia, but my Director of Cybersecurity (my much smarter wife wink ) has told me to stop doing so...so I won't.

Thank you.