Fender Jazz neck. Please, what´s the difference btw c shape and modern c shape?

[xantometapon]

Hi there?

Can anybody tell me the difference between Fender "c shape" and "modern c shape" necks?

I am a little confused and seem to find no info...

Thanks a lot

 

[michael_atw]

I may be incorrect, but I believe the modern C may be a bit more "thinner" in the depth.

 

[bongomania]

That is my understanding too. It is less thick from the fretboard to the outermost point of the back curve.

 

[Truktek2]

I'd like the answer to this as well. I have an American jazz and Highway 1 p, both with c shaped necks, and they couldn't be more different front to back.