Crank that's good for a core to either trade in or have reground. Is already turned 10/10 and needs to be turned again. Looks like it has spun a rod bearing before the regrind, and one lobe looks like it has been heated up. Crank is bare- all gears, bearings, keys, etc removed.
Bottom line, I wouldn't run it as-is, and neither should you. Best used as a core for someone who is buying a crank and doesn't have an old one to trade in.
$10