User blog comment:JustSomeDude.../761- Let's talk about Chapter 595!/@comment-5239749-20140920164236

On the subject of chapters containing parallels with one another, perhaps the "National Treasure" Doflamingo mentioned is somehow connected to the "Heavenly Tribute" he purportedly stole to blackmail the government (Chapter 727 for reference). He might have discovered the treasure's existence and confiscated it to negotiate for his Shichbukai status and Tenryubito privileges; the money angle simply being a smokescreen concocted by the higher-ups.