Correct, the GMT-Master II has never had the rehaut engraved. It was introduced from 2004 to 2005 with the ceramic model and extended to the Rolex line.
But for the GMT-Master non-ceramic (Pepsi, Coke and all-black), its manufacturing was ceased before the introduction of this feature.
This ceramic pepsi on the OP's link is fantasy and has never happened on the real thing.
Cheers,
Spirit.