take the barrels off the gun and check both the top and bottom ribs for a cut line- not to be confused with the 'expansion joint" on the top rib, similar to that on a sidewalk or other poured concrete. My LC Smiths show that joint clearly, on the middle to higher grades they are filled with silver- show up quite clearly.

If this gun has mono-blocked or sleeved barrels from the orginal un sleeved barrels, there should be signs of the ribs re-set, at least in my limited experience.

Murphy is it now? Good Irish name indeed. I've been a firm believe in Mr. Murphy's law for many years, have also been wearing his fine shoes ( in his partnership with Mr. Johnson of course) as well. Not my checkbook on the line here, but are you considering making an offer on this Parker?