Beautiful books. Here's a trivia question: How many Golden Age comics have rhinos on the cover? That might be a very fun subset to collect and display. Or, if the answer is "one", then congrats, you've got them all!
As for Heritage, I swear that their grading on unslabbed books has gotten miles tighter than it was 12 months ago. Just look at some of the stuff they've got up now. You mean to tell me that the Hangman #2 (what a cover!!!!) is merely G/VG, even with the flaws they describe?
Here's the cover, not because I want to judge their grading, but because I think it's wicked cool. The green background, the rope logo, the clock bondage, the gallows....they don't make 'em like this anymore.