I have a pair of sport mirrors which I believe came from a 72 GS, but do not know for sure....I see no part numbers on them, but can tell you that the box they are in is marked "72 GS Mirrors". Drivers is adjustable, passenger is manual. Both mirrors are in overall decent condition and will need some finish work to be excellent. Glass is decent and both mirrors have their plastic bases and all four nuts. Drivers includes door panel adjuster knob finish piece. On a scale of 1 to ten, I'd give these a pretty solid 7. $50 shipped anywhere in the lower 48 with payment via money order please...thanks! Chris
Those are late model '78-up mirrors. More ID info can be found at http://www.buickperformance.com/SportMirrors.htm