This is not uncommon. Each tube was made from three different sections, of differing thicknesses as the technology for machining a tapered tube didn't exist. The sections were usually jump-welded together, but obviously other similar welding techniques were used, beyond my knowledge. The patterns are very nice, it's kind of a bonus nowadays, showing different patterns on the same gun to highlight the tube maker's art.
It may be the lighting or the deterioration of the lacquer, but it looks like it is a "Black & White" gun to me, which I think would be atypical for Australia. Looking at the barrel flat picture, it looks to me that it might have been recolored at some point.
Regards
Ken
Last edited by Ken61; 05/10/15 07:47 AM.