There is this PISA Datograph in PT (LE of 10 pieces).
It is the same size as the "regular" Datograph but its dial is Rhodinated.
Normally lighter colored dials seem to wear bigger.
I dont know of one that is for sale now but IF you like the Dato but want it
to be slightly bigger then this might be a nice compromise? You will,
however, get the second-best Datograph ever as you will miss out on the
characteristic black dial with silver subdials ;-D
Edwin