Midways Larry coperfield has some of the best smith wesson revolver vids on YouTube. https://smith-wessonforum.com/redirect-to/?redirect=https%3A%2F%2Fyoutu.be%2F95xjizDOrcc%3Fsi%3Dgoi4bSifp5lk0Adm
Any pre lock L frame in good condition is a great gun. How much are they asking? Here is how you inspect a revolver https://youtu.be/95xjizDOrcc?si=goi4bSifp5lk0Adm . The 627 is also also a good revolver depending its price.
I sent you a pm on parts, also I would avoid the factory work on early revolvers. If I’m going to alter the gun, it’s going to by a known and sought after smith.
If the serial number starts with S176XXX that series stared in 1957. If those are matching grips, that will add value. I believe those grips are “Cokes” which are sought after and are worth a good amount by themselves.