The lighting on those pictures does distort the colour Ken, its shown slightly better in the last image.
I'm assuming that this method of welding these different tubes together was a cost and time cutting method of lower grade guns?
Cheers
No, just merely the technology of the Time. The same techniques/methods were used on all pattern-welded barrels. I'll go out on a limb here and say that on higher grade guns a greater effort was made to more closely match the patterns, but that may be an incorrect assumption. There's no real difference in strength between any of the types of patterns. (or pattern-welded types) Greener may have gotten a deal on tubes with mis-matched segments, and decided to use them on an export gun. It's very possible the importer saved a few shillings....
I'll echo the sentiment of what DocDrew said, it's wonderful you have a gun with so many different patterns. It's extremely "Cool" to us pattern-welded devotees...
