There are four ways that copper-alloy vessels were made: by casting, raising, dishing or riveting. [ARWIDSSON 1984] Petersen argues that many of the copper-alloy vessels from Norway were insular because they contained a large percentage of tin, an alloy not found in Norwegian copper-alloy [PETERSEN 1940:p.8].<br>
...... [SPEED , GREG & WALTERS WALTON ROGERS 2004:p.80]
==Riveted Vessels==
{{Ref|Rygh 1885}}
{{Ref|Schietzel 2014}}
{{Ref|Speed , Greg & Walton Rogers 2004}}
[http://www.unimus.no/samsok/index.php Universitetsmuseenes Webportal]
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