Just came here to say: Fork is possibly bent. Pretty sure it's a PA10. PR10 would have a larger-diameter seat post in the high 26mm range. PA10 would have a steel post in the lower 25mm range, if memory serves.

Even if the fork is bent, seat, barcons and brakes should net over $100 on eBay (or even here) and could potentially justify buying. Be sure to inspect for cracked lugs and DO hanger hacking and use both as possible haggle-down.