I really like this bike. I'd value this bike right around $200-$250. It looks to have the remnants of a Reynolds 531 sticker on the seat tube. If this is a full 531 bike, that would up the value. Otherwise I'll stick to my original estimate. The bike is clean and has a decent parts mix but nothing that adds a huge amount of value. The campy RD will help sell the bike. If looking to maximize return on craigslist, you could pick up a cheap saddle to outfit the bike and sell the brooks saddle separately. That seems a shame though since the saddle really matches the bike.
You could ask as much as $300 on the bike and stick to it. This bike is very clean for a bike from the 60s. Writing a good CL ad is helpful where you document what you know about the bike and the work you have done to get it running right. I know I'd be tempted to buy this bike if it showed up locally.
OP: where are you located? Vintage bikes like this tend to command a premium in larger cities where there are more buyers.