For all you fans of tuna cans, this beautiful little set is on Reverb. Nice finish. Super cool drums. He does mention some extra holes associated with the spur mounts. Still, hard to find any Hayman, much less on in a basic 20, 12, 14 set-up. Bass is said to be 13x20, which is a bit different.
https://reverb.com/item/7525533-1969-george-hayman-vibrasonic-in-gold-ingot-13-x20-14-x14-8-x12