Kennebec assigned the number 12075 to a 17' Type A Kennebec model built in March of 1917. It was originally painted red and shipped to L. Scharwzhopf on 6/9/1917.
So, yes, it is one of the Morris-built hulls that was sold by Kennebec, no it was not one of the post-fire Morrises. There is no relationship between the numbers Morris assigned and the numbers Kennebec assigned. Also, in no case so far seen did Kennebec see fit to make a notation that any given hull originated at Morris.