I am the original owner ( bought when I was a kid ) of a 1967 Ludwig Oyster Blue Super Classic kit . While cleaning the shell with Novus today I discovered an extra hole behind the tom mount . The huge washers used with the mounting screws covered it all these years when I was happily unaware . Looks like somebody at the factory drilled the airhole in the wrong panel but luckily for Ludwig it was in the panel the mount was to be fitted so just cover up the goof - no prpblem !!!!!! DOH
P.S. Those white streaks you see are NOT scratches or scuffs in the drum . Some weird reflections .