Bits...thats a good guess...but now it's everywhere...in fact I can't find one that's not mixed...even the one the picture trail "Terrell" is mixed...I have some reviewing and head scratchin' to do...my guess is wire...not only was the technology 'old hat' in Europe, so late in the industrial revolution, but wire can be intracately woven, drawn, twisted, welded, and flattened into a skelp...it can be so intracately woven, that you could write a name like Terrell, but the diameter of the wire billet would be so large, that it may have been drawn through a series of rollers into a long wire, before being flattened into a skelp...it's always been my guess for the other lettered barrels (Prince Albert or the word REMINGTON) ...so now my "wire" guess has broadened to include crolle...there are many other factors as to why wire technology is a strong candidate for reverse engineering at least one type of rolled damascus barrels...