Interesting Toradar Barrel

[archer]

Hoping to find more information on how this Toradár barrel was made. It probably came from Jaislemer a city fort ruled by a Rajput family.the barrel was all I obtained weighs 6 lbs. and is 39 inches long with a bore size of 75 hundreds of an inch, it easily accepts a full choke muzzle loader wad. The chamber and muzzle are made in an orange slice pattern and an exaggerated zig-zag pattern on the slightly oval barrel.
Dr Leo S.Figiel in his book" On Damascus steel", exhibits similar barrel designs . This one incorporates two designs in one barrel. At these junctions are steel bands once covered in some gold. I think the swaging was done in a cone within a cone and the rings were cover the weld.
Everything about this barrel while similar is different. It seems at one moment to be an applied layer then as the entire diagonal spiral wrapped solid construction barrel. Apparently inserted faggots of steel were forged together, Multi Fiori glass or hard candy fashion.

Note the slice pattern is diminished under the chamber and what is there is rather faint??? The zig-zag pattern is hard to follow it appears to overlap the raised ridge of the barrel.

It came with heavy oxidized patina with only a hint of maybe engraving at the breach. Never having seen one up close I'm not sure what a restored finish should look like love the design effect in the polished muzzle area.
Is six pounds excessive for a barrel? any and all comments and further advise will be appreciated Steve