Thank you for posting this!
As @anthony_CCG mentioned, EX Deoxys Gold Stars have print variants known as the ‘US’ and ‘EU’ prints. However, as I’ve mentioned in another post, I do not believe that there’s such a thing as EU prints.
Instead, it may seem that these supposed ‘EU’ prints were actually from later print runs of EX Deoxys. I own one of these variants as shown below.
If everything checks out, this ‘EU’ Latios has the -15 dot arrangement which would indicate it was from a later print run.
Below is a ‘U.S.’ Latias I’ve owned previously with the +15 dot arrangement.
We’d need more data points, but this could very interesting to look into.