You have to look them up in the Standard Catalog of Smith and Wesson by Supica and Nahas or call S&W.
Look on the butt
S&W factory 1 800 331 0852
You will have to buy a book.
Look on the butt for the sn
Look on the butt of the revolver.
I would require much more info to answer your question.Please start with the fact that I am not aware of any Smith and Wesson serial numbers starting with the letter V.Please include the type of Smith and Wesson you have(revolver,semi-auto pistol),the barrel length,the caliber,how many shot if a pistol,the caliber of your Smith and Wesson etc.I can then start to look and find a answer for you.
The numbers AVU6432 are the serial number to your Smith and Wesson handgun.This indicates that it was made in July 1987.as to the model of Smith and Wesson you have.Open the cylinder of the revolver if thats the case and look on the inside of the crane.This will tell you what model you have.If you have a semi-auto pistol the model will be marked on the slide/or frame.
smith and Wesson handguns have had there model numbers stamped on the crane since 1958.open the cylinder and look at were the clylinder and the frame come together.there should be a serial number and a model number and possable dash that follows.example ( mod 15-2).
Call S&W with the serial number or look it up in the Standard Catalog of Smith and Wesson, 3rd ed by Supica and Nahas.
Look on the butt or inside the crane area
You must provide the sn or call S&W with it. The Smith and Wesson model 19 3rd change(19-3) was made by Smith and Wesson from 1967-1976.The serial number should be found if you swing the cylinder out and look at the yoke just below the barrel.