They are what I thought was the typical patterned plastron of Brazilians. I have a 30yrs+ with that pattern.Anyfoot the above only tells us that that particular one retained the marbled plastron... and again I doubt he was much more than 20 years old in the bottom pic.. if that!
I guess I'll have to wait 10yrs or more to see what happens to the 2 I posted on this thread. (see if they get the high marbling)