What was your most profitable comic collecting find?

One of the details in the story of Action Comics #1 sells for $317,200 was that the person selling the book found it in a second-hand store in the early 1950s when he was nine years old, and bought it for 35 cents. Obviously, he’s the current all-time champ in the single issue category, with Chuck Rozanski holding the award for bulk purchases with the Mile High Collections.

But it occurs to me that most collectors have at least one great find in their collections. The issue to the right is mine, Man Of War #1, from 1940, which my father and I found in a coin collectors store in Lake Ronkonkoma in the late 70’s-early 80’s. I bought it for $3, and it’s worth about $1000 today. At the same store, I also bought a copy of the first edition of the Overstreet Price Guide, which is worth a few hundred bucks now as well.

How about you? What was your greatest find?