Give us the serial number, from the bottom of the grip frame(if your worried about privacy replace the last 2 or 3 numbers with an x for each), tell us whether it has fixed or adjustable sights, the length of the barrel from where it meets the cylinder to the muzzle and you will get an approximate date of manufacture. Also, if you open the cylinder and look on the frame what is stamped there. On older models there would only be an assembly number, Newer models would have either a 57 or 58 and possibly a -the another number. The number after the - tells us what revision it would be.

Pictures of both sides do help also and even if we don't need the pictures to figure it out we do like them
and welcome to the forum