Information about my grandfathers pistol

I am somewhat new to revolvers. My grandfather recently passed away and i was left one his revolvers. I am just trying to determine what year the gun was manufactured as well as any other intersting facts about the gun. The markings on the barrel read 38 S. & W. Special CTG. and the serial number is C401XXX. Any information would be greatly appreciated.

is there a makers name on the pistol ,,S+W= smith and wesson,,colt,,ect.. may be on the top of the barrel along with patent dates or on the left or right side of the frame,,or are there anything on the grips..colt may have a horse and smiths would have a script SW,,need some kind of company name to better id it..
bigcurt