I picked this revolver yesterday for under $300 OTD High Standard is much more well known for their rimfire autos and they even built the 44 Auto Mag for a short time. However, they did build rimfire revolvers as well. This model is the Sentinel MK IV, which was a 9-shot steel framed revolver chambered in 22 magnum. I also have a nickel plated Sentinel Deluxe in 22lr. The long rifle models had an aluminum frame and are certainly more common. The MK IV model was only built for a few years in the mid to late 70's, so they aren't something you see every day. In fact, I believe this is the first one I've ever seen in shops around here. A quick glance didn't show any on Gunbroker at the moment either. While the grips are a little beat up, the gun itself is in very nice shape. I'd rate it at least 95%. It looks like its been sitting around a long while and could use a good cleaning, but the bore is bright, the bluing is in great shape, and the lock up is very tight. 9 shots of 22 magnum is nothing to sneeze at and this would make a fine little carry gun if so desired. This one has a 3" barrel. By the way, High Standard revolvers have no cylinder release button or lever. You simply pull the ejector towards the muzzle to release the cylinder. I figured to mention that in case you were wondering where the lever was. I really like the way this revolver looks, especially the "melted" look around the ejector shroud and the business end. Its an attractive piece, in my opinion. The grips aren't the prettiest (even if they were in great shape), but the ergonomics they have are great. This revolver fits my hand very well. Does anyone else have one of these? I'm not sure exactly how many were built, but they don't come up for sale all that often. I have some 22mag CCI ammo in my closet and can't wait to shoot this baby. As always, please enjoy the pics and share your thoughts on my new revolver. Thanks!