Oh, my lord:
How do you make one of the greatest villains in history a hero? Granted, Stevenson was always a little ambivalent towards Silver, allowing him to escape with a portion of the gold at the end of Treasure Island. When I first saw this I assumed that the CCA had told Charlton, "Yes, you may have a pirate comic book, provided the pirate is lovable." But apparently it was based on a movie and subsequent TV series as you can see from this poster:
Here's a brief clip from the movie:
Looks like a faux swashbuckler a la the Crimson Pirate.
BTW, take a closer look at that cover. Notice something missing?