how to tell if its a fender or squire body on a jazz V?

Yep post pictures, as soon as u do I guarantee you'll know w/o a shadow of doubt.
W/o pics though I have a feeling it's gonna be hard for someone to sum up all the variations of almost 60 years of different Fender bodies to look for.
Some details may not hurt also.
There are obvious things to look for but if you can't tell these guys what your looking at its gonna be difficult for them to help out.

Pics would net you your fastest response. Be prepared to have pics of the control cavity, neck pocket, pick up cavities, so they can see the routing and different details.