S&W 10-5: Blued steel, fixed sights, tapered barrel (AKA pencil barrel), most 4" barreled models had square butt grip frame (although some round butt models were made), pinned barrel. Everything you need and nothing you don’t. Easy to carry, one of the best DA actions every made. The 10-5 series was made from 1962 to 1977
The Model 10 chambered in 38 Special and fitted with a 4” barrel may the most universal handgun ever made. Accurate, reliable, durable. Small enough to be easily carried in a holster, large enough to be easy to shoot. Can be pressed into service for target work, small game, or self-defense. Extremely safe action. Made in huge numbers so parts are available if needed. Holsters, speedloaders and grips are readily available.
Just an amazing American handgun.