It is interesting ....The guns of Oman were seldom if ever made there... The majority appear to be imported and many were Persian made. The signatures on yours seem to be of Persian artesans . See also
http://www.klm-mra.be/icomam/downloads/issue07.pdf and note that they consider a lot of the barrels to be European, perhaps German.
I seldom see gold on the barrels although silver appears often... See also
http://www.vikingsword.com/vb/showth...ght=Omani+Guns
Regards,
Ibrahiim al Balooshi.