Guy I got this from bought it at a show almost 30 years ago. He claimed less that 100 rounds through it, and I have no reason to doubt it. Even had the original shipping sleeve. 1983 era MKII.

ME TOO !!! Have 'em in both BBL lengths but the 6" STANDARD is my favorite. The last 4 3/4" STANDARD I bought was one of the 50th Anniversary guns which I paid $159.00 NIB for about five[?] years ago. It has 22,000 rounds through as we speak ; it just got a cleaning for the third time a couple of weeks ago.