Left is a CD 666 (F- Isorex, R- 243) in that really dark olive green almost blackglass color. Has one flea bite to dome. Right is a CD 550 (F- Isorex, R-233) in that same funky lookin' dark olive green. No damage. Take the pair for $60.00 + shipping. First email that says' "I'll take it.". No PayPal.