Dear @bimasta : I can be wrong but does not means I posted because an " idea/imagination " .
Raul, I’m sure your memory is very clear, based on your reading at the time, that the hole in the SAEC mat is there to match holes in the LPs. Maybe way back when, it was cool to drill little holes in our records.
I remember a time when I’d remove an LP from the TT, set it safely on its cover lying on the floor before putting it away — and my girlfriend would step on it while coming to kiss me.
No problem, just buy a new copy at Record Hunter for $4.
Nowadays that record might be so rare it’s priceless, and a hole would be unthinkable.
But to reply to a mild word like "dubious" with "How dare you" seems a bit over-sensitive.