I bought a 180mm Dura-Ace 9-speed crankset on eBay, and the 53t chainring seems somewhat shark-finned. I've seen badly-shark-finned chainrings before and this isn't one of them, but it might be bad enough to skip.
For people experienced with this kinda thing, should I just toss the chainring, or at least try it and see if a new chain skips on it at all?
The last picture is of my brother's Campy chainring which was absolutely shredded.

(I'm not annoyed with the seller; the chainring was pictured close-up in the auction, and at 6'5" it's tough for me to find long crankarms and I have extra chainrings sitting around if need be.)