WTB single sided crank based power meter

Looking for a 172.5 left side only Ultegra crank arm power meter. Preferably gen 2 or 3 Stages or 4iiii.

Thanks

Eric

I have a 172.5 Dura-Ace 9000 with a Stages Gen 2 power meter on the left crank arm. There’s some rub marks on the right crank arm, but it’s strictly cosmetic. Let me know if you’re interested.