I've established that no drilling required!
Both are similar widths, but the old one looks so much better.
Almost 6" across. Can you believe that?
How many of you will now just have to take a measure to your badge......

I now have it clear in my mind. The 4/4 Anniversary is to celebrate 75 years of the 4/4, but is in fact a plus 4 dressed up in 4/4 clothes.