68 years
In a model of 4 rows and 4 columns (16 tiles) 4294967296 different combinations can be formed.
Assuming I can visualize 2 combinations per second, it will take you
68 years
and just over a month to see them all. :S
These tiles continue to be manufactured semi-annually in the
Bisbal d'Empordà
by
Jomohop