Early 70's speaker, sound great! Excellent!! I'm guessing the Jensen brand. Awesome speakers if you're putting together a vintage stereo! Also IMO would be great for a guitar in a 2-12" cabinet if you don't use heavy distortion. These ceramic magnet speakers allow more headroom without early breakup, a bit tighter high end and take gain better. If you paired one of these 12" with a vintage 12" 1940's alnico magnet speaker (which I have for sale) it would sound incredible. I will build stereo or instrument speaker cabs to custom spec. Price negotiable. Nice clean clear speakers. Sound like they look. Thanks for looking