I compare a 1963 Jensen C12Q C7368 to a 1972 Celestion G12M25 75Hz T1221 Pulsonic Greenback using a 2019 Marshall SV20H Studio Vintage head, a Strat and an SG. This vintage Jensen as well as others I've played and documented earlier sounds like a Pulsonic Celestion Greenback with more clarity and punch and a bit less mids.