My Monson Mass DW 15-2 4VH has the overtravel adjustment screw in the trigger not in the frame.. Serial # 3268XX
Monson Magnum & I discussed this a while back & I'll post the pics..
Here's one of my Dan Wesson in all it's Glory
Hi Dan,
I've got one of each (.22/6" blue, .357/4" blue, .44/8" blue), all of which I bought brand new over the counter from gun stores, but for the life of me, I can't place the years I bought them. It was a while back. My best recollection is that I bought all three within about a year of each other but I can't swear to that.
But just to add to the reference base, I thought I'd mention that my .357/4" is Ser#254xxx and it has the set screw in the frame and full underlug shroud. It is stamped "Monson" on the side. Since my Ser# appears to be earlier than yours, but my set screw is in the frame, that may indicate some confusion about the time frame of when they moved the location of the set screw.
My .22 is Ser# 260xx (just 5 digits), it is also stamped Monson, and it has the set screw in the frame, and it also has the full underlug on it's 6" shroud.
My .44 has only had probably 2 boxes of ammo put through it, but it's in it's original box at the bottom of my safe and I don't feel like digging it out to check the numbers. However, it is an 8" barrel, and it came brand new with the extra ported barrel (never fired) so it's still in it's original box with papers and all. When I do dig it out at some point, maybe some of the paperwork will give some more info.
If I get lucky, I may run across my original receipts for some or all of these which would better place their time of manufacture.
Mark