Mark: Austin and the experts are all probably at The Vintagers, so I could probably get away with saying about anything until they return
This is a pic of Austin's Laminated barrels, which may be Parker made, and are quite crude (with poorly matched tube segments) compared to quality British laminated steel barrels of the same time period
The forward section of the left barrel clearly shows they were 3 Iron with the weld lines, and another weld line obvious between the breech and forward tubes which have different patterns