Rich vintage 70s sound, often said to be the one Jimmy Page and Angus used then. Original cone perfect working and sounding G12H30 blackback T1217 model 16 ohm. July 10 1978 date code frame stamp, original kurt mueller cone with 1777 dark black ink stamp on inner cone as pictured in 4th picture (hard to see...verified on the bygonetones celestion page that later 70s ones often used black ink stamps). 75hz lead cone, sound great, fully tested, works perfect, no holes or dings at all in cone or surround, no funny noises, no coil rub, etc. This would be great run with an attenuator in a 1x12 cab for classic tones at low volumes for studio and home recording.