I'm looking at a very nice S&W model 27-5 with an 8 3/8" barrel and target grips (football style not cutout). Does anyone know when the 27-5 was introduced? I'm sure it's value is probably less than a comparable 27-2 but still, does anyone know about what it's worth. I'd hate to way overpay but also hate to loose the gun. It is super clean with almost no signs of having been shot outside of the factory although it does have a faint turn line. Thanks