Its a tie between the K22 2nd Model and early "Pre" Model 19 Combat Magnum.
Both are not only unique but made in small enough quantites as to make them a rare find...... especially in high condition .
I only have two, a 13-3 4" and a 65-5 3", both recent purchases.
Here's the 13-3
I have to say, this is an accurate revolver! Feel is sweet and the balance and action are perfect.
Here's the 65-5
I'm having a bit of trouble with Hogue CS getting the anchor nut for the attaching stirrup. I bought these grips 20+ years back for another project and finally decided to use them here. These grips aren't relieved for the grip pin to remain in the grips, so the "other" stirrup is used and in this case, the nut with the smaller diameter threads. Seems I'm inconveniencing the CS girl, but I'll keep after it and report back.
As to how this 65 shoots, fuggeddaboutit! It's all that and a bag of nuts. This thing shoots true and with these grips the recoil is minimal and the control is spot on.
This one. 1905 early pre heat treated 4th change. This has to be the sweetest shooter I own. Also the coolest. Barrel has been shortened to just shy of 4 inches and the single and double action are slicker than a baby's behind. Shots point of aim up to 25 yards. Just don't get no better.
DW