I have a Space Shuttle that was bought from someone in Hungary, but it had all the stickers indicating it was released in Austria - including having an extra set of 10 ÖS coin labels (the original set were scratched out), and a Farfalla that was bought in the USA (and seemed to be released in North American as it has a NEMA plug) and had standard 25c plates.
I didn't think much of it at the time, but it seems that of the 4 coin plate brackets I have between the 2 (I mixed them up), I have the coin slots as:
1 @ 25 mm
2 @ 28.5 mm
1 @ 32 mm
Researching this, the diameter of the coins are:
AUT 10 ÖS : 26 mm
USD 25¢ : 24.3 mm
So basically the only coin that fits in the 25 mm slot is the 25¢, so this must have been used on the Farfalla. The 10 ÖS coins fit in the 28.5 mm slot, so that makes sense. But why is there not another 25 mm slot for the other 25¢. I don't recall buying another bracket - and if I did, I sure wish I could remember where I did!