JBL D-130 cone; how to tell if it's original?

[snoof]

I've got a couple of D-130's and i think one might be a recone.  Any way to tell for sure?  The suspect cone has dope on the surround, It seems that I don't see that on pics i've seen of D-130's.

[FYL]

JBL shipped many versions of the D130, including models with a doped surround (beginning with the F series). I've seen very few D130's with their original cone assemblies, and none in the MI field.

What are the markings on the back of the cone? What is the serial number on the magnet foilcal?
Can you post some pictures of the speaker (front and back), the alu dome as well as of the surround?

[snoof]

I'll post some pics directly...