In my experience with vintage Gibsons and Fenders, including owning a 1960 non-SG LP Special, the tone mojo exists mostly in the pickups. I have no idea why that is from an engineering perspective. It's a combination of clarity and warmth, lots of highs but zero harshness. Other characteristics of the vintage guitars; they were light, had a great feel to the finish, and were generally more difficult to play than newer guitars. The Fenders were especially poor playing. I strongly suspect that the reason for the high prices of the vintage guitars now is due to mostly legend from past players. Back in the 70s and 80s the big players played the vintage stuff as it was better sounding than what was available off the shelf. Nowadays it seems thhat many of the legendary players that made their fame with vintage guitars are now playing new ones right out of the factory. In general, in the last few years, most of the guitar companies have relearned what they forgot from the golden years, and are making great guitars again.