Can you tell whether the sight is pinned through the stump of the original sight or soldered to the barrel?/Quote]
I'm considering getting out the screwdrivers and taking it apart. I have a suspicion that there could be a maker's name on the underside. I'm a bit reluctant though, because I can easily imagine losing that spring or finding putting it back in place a royal pain.
I also have a .45 Long Colt New Service customized by Dean King of SF, and a .38 King-Colt Super-Target version of an Official Police. Both have Sanderson grips.