Model 60 build date?

[Brother_Love]

Could one of you fine gentlemen please help me with a build date of my model 60? Serial 574xx
Thank you!

 

[AZretired]

There probably should be an R in front of that number, if so it would be between 1970 to 73. Did you get that number off the butt?

 

[Brother_Love]

Off the grip, I will check revolver when I get home. Thanks