The bright centre parts of the grain often darkened in contact areas with time. The bright peaks were the result of a crystal-like coating that gradually rubbed off with use.
Nubukato had the appearance of a nubuck leather.
Nubukato loses the two-tone effect in contact areas with time (photo www.leder.expert).
At first glance it looks like a nubuck.
In the close up the crystal-like surface can be identified.