Ok, here it goes. Here in Guatemala, we have both CZ 100 and 110. I personally own a 110 and it came from factory with a couple of 13 rd. mags and I seriusly doubt that they have all 10, 12 and 13 mags. I guess that those mags advertised for 12 will take 13 rds. like mine.
Hope this will help.
P.S. I forgot to mention, but both guns use the same magazines.