You can go lots of different routes here depending on how patient you are.  In my opinion, you get the most money for anything collectible you sell from eBay.  Yes, eBay is quirky and they take about 10% of your profit, but they attract the most buyers by far.  However, in order to get the highest prices you have to list the item accurately, post lots of pictures and have a track record of being a good seller in the past.  In other words, if you have zero or low feedback, you won't get as many bids or get as much interest.  Your feedback is a reflection of your honesty, your ability to pack well, and ship everything in a timely manner among other things.

On eBay you can list with a fixed price or sell by auction.  If you need to sell quickly, then auction is the way to go, and sometimes you actually do better than with a fixed price, especially if your feedback score is good (over a couple hundred).  If you have all the time in the world, then sell by fixed price and start with prices you know are too high and slowly bring them down over time.  There was a Monster Manual signed by Gary Gygax and formerly owned by Andre Norton offered at $12,907.04 on eBay recently.  I suspect someone bought it for half that, but that's still a lot of money.

There are several Facebook auction sites for rpgs.  You can sell items here in the Classifieds section.  Even if you sell on eBay, you'll improve your sales by referring people to those listings with links in the Classifieds section.  I'd mention your listings on other rpg sites too.  But you probably won't maximize your profit through these venues.

Finally, most sellers fail to provide enough information in their listings, especially photos.  You supplied photos better than most people asking for our opinions.  Most folks asking us provide no photos.  However, you still need to describe any (or lack of) smoke smells or mildew smells as photos can not see smells.  It doesn't hurt to also specifically comment on any staple rust if present or not.

This is not an exhaustive list of advice, but it can get you thinking.  Good luck!  

Cross-posting will get you more eyeballs on your stuff, but direct interested parties to go to your preferred marketplace to buy. Otherwise, you wind up just confusing yourself. Providing a link is a sure way to get them to go.

mbassoc2003 wrote in Rare one of a kinds.  Want your opinions....:PS. What's the avatar from? I don't recognise it, but I feel like I've seen it before.

I'd say "your bathroom mirror," but that would be too easy.

LOL. more good advice.   Just a creepy version of TOTORO.

scary totoro - Google Search