These barrels are Damascus that was etched. This was done by Gibbs, on rifles, in England (I think I remember Gibbs) and Schilling in Germany.
I once owned such a Schilling that is presently owned by a member of the BBS. I have posted this shotgun in the past.
http://www.worldpath.net/~jmann/Schilling%2094779%20016.jpgThey are strikingly beautiful.
The gun, in question, does not appear to me to be of either one's building. Then again, the boar head would certainly make one think Germanic. Perhaps a provincial German/Austrian builder. This would explain the lack of marks. Circa 1850/1870??
Best,
John
