I purchased in an on-line auction, and received today what I believe to be a .455 Mark II hand Ejector 2nd model that has been modified. I didn't spend a lot on it, so it's a keeper (for a shooter).
N Frame with Canadian(?) "arrow", Crown over 66 over E, and "11" on left side of frame and "crown over BV and crossed pennants on the left front side of the frame.
Multiple BNPs on barrel and by each cylinder. Barrel (left side) is marked "Smith & Wesson .455" with the second 5 x'ed out and AR added.
The butt has a plugged lanyard hole and the S/N 63055 Barrel marked B 63055.
It has been refinished - with fairly crummy preparation in some places, but nice bluing. The trigger was blued, but not the hammer. It is absolutely vault tight.
The cylinder has not been shaved. There is no serial number on it. I read in SCSW that many were converted to .45 AR, and this seems to be a textbook example of that. It looks like it was not shot after conversion.
A 45 ACP shell drops in, but the ejector will not eject or even come close to catching. I am hopeful that I can use moon clips successfully.
It has replacement grips, but I'm not concerned with authenticity after the refinish/conversion.