"The company continued to sell the 356 C in North America through 1965 as demand for the model remained quite strong in the early days of the heavier and more "civilized" 911.
The last ten 356s (cabriolets) were assembled for the Dutch Rijkspolitie, the highway patrolling predecessor of the Netherlands police force, in March 1966 as 1965 models."
https://en.wikipedia.org/wiki/Porsche_356