Credible??

See description:

Altec 30942 10" 12" Speaker | eBay

This guy has a few guitar speakers, also.

Dunno. Doesn't matter, wouldn't buy it with a hodgepodge recone anyway...

Bill at GPA prolly would know...or whitebroncoii (sp?)

It used to be a "Dynamic Force" woofer, originally found ONLY in the model 874 Segovia.

The modified 414 basket is a new one for me, the only Segovia i've been inside i'm sure had a stamped steel basket on the woofer with that same HUGE motor.

You can verify the woofer part number in the 1975 reference guide.