Hmm, I see what you mean, there's some 'suspect' copies out there. first glance I'd say the ones with no middles, like the US releases are dodgy, the original UK 45 was a solid centre, I don't remember seeing any dinked copies.
If there are any, the big 'A' in the middle is bigger than the hole that would be left.
I'm fairly sure that it would still be partially visible if it had been punched out for juke box use etc.
The solid centre ones look OK to me. But if anyone knows more, do tell