If there would be no video images and only still pictures of Golden Age Bb'ers I would rank Mentzer a close second after Sergio...
His posing is so dramatic, those crazy forearms, triceps, cannonball delts and nice biceps, perfect waist...
Extended arm poses, vacuums, arms above head poses...
What is even more funny is, both Sergio's and Mentzer's posing seems flawless and dramatic in magazine pictures, but it was quite the contrary...