Recently boughs old smith and Wesson 5 screw im in the process of restoring it but i want to know what year it is

Incase picture is blurring serial number is 569397
and no serial number inside the yoke only a parts number it is a hand ejector 5 screw model the cylinder swings to the left hand side
It is chambered in 38 S&W SPL

I am wanting to say it is a 1920s-1930s

I put in a request with S&W historical foundation waiting to hear back

Note: I am restoring my self this is my first time owning a revolver and my second firearm restoration it is in great working condition the lockup is tight I am very pleased with my purchase

Also if anyone knows where I can find period correct grips please let me know