I bought a pair of monitors on the cheap. They seem to be all JBL original. The enclosure is a 4502wx (yep, it was covered in black arborite!!!). The woofer is a 2215, badly redone with a weird huge black pseudo cap! there is a 2405 tweeter and the mid is the expected horn but with a 2440 driver.

My guess is most likely 4320, late model. I am wondering if the 2440 can be original or was a replacement?

My understanding was that nothing was really standard at the time at JBL

https://photos.app.goo.gl/mbWpPBlsUfVBloag1