Courtesy of Peter Dyson "These original Damascus tubes were made in Belgium around 1890 and have been in storage since then. They were discovered and shipped to England in Spring 2003. The fine Belgian barrel makers Oscar & Lucien Delcour of J. Delcour-Dupont and E. Heuse-Lemoine of Nessonvaux, near Liege made these tubes."
All these appear to be 2 Iron
Damas Crolle'