I'm afraid I'm not a very good source, as far as value goes. But a good rule to go by is age + condition = value. If you do decide to list on eBay, one further piece of advice I can offer is to include pics of the cover, spine and back of the magazine. You will find collectors are often not as concerned with the inner pages of an issue because people looking at the collection almost never see the inner pages. But, most collectors (me included) are very interested in the spine, because that's what shows on the shelf. If I see an eBay listing that catches my interest, I immediately look for a pic of the spine. If it's not there, I just move on without asking the seller for a pic. If you want, you can pop me some pics of your collection and I will help as best I can. My email is jammerman77@yahoo.com

I have a collection of Nat Geo mags from 1976 through 2022, all in slipcovers and in excellent condition. Looking for a new home where they will be appreciated.

C. Schoeppel