The caliber marking on the RH side of the bbl is done by hand engraving.
The style was done so to match that of a roll die type impression, but you can see with carefull and very close examination that it was done with gravers and some assistance with hammer & chisel.
Plus the font style as done on the bbl with it's serif style lettering does not match that which was done on a factory bbl marking.
Very nice work though!
So I'd guess the bbl was a rebore/rerifled 38-44HD or a 44 3rdmodel.
The new Front Sight base likely pinned /attached to the bbls orig fixed front sight base if it's not been cut back at all..
Perhaps the orig base milled to a narrower profile so the new ramp could be fitted over it in a blind tongue and groove type attachment for strength (and easier 12oclock timing!). Then pinned and maybe additionaly sweat soldered in place.
Nice Work!
I'd probably do w/o the Wondersite, but that's just me.
