the 2012 300 series does have small MOP dot fretmarkers, which are also on the 3 & 4 series as well -
the one pic that shows the large MOP dot fretmarkers & a marbled stripe on the fretboard is used on all of the 300
series steel strings (including the 356ce 12 string) & it appears to be a 'place holder' pic that should be updated,
similar to the pic in the 'browse by shape' section which shows a 2011 700 series (ab rosette, rosewood binding)