Hi,
Recently purchased a charming 1936 Dutch publication, discussing the technology of some contemporary guns in use by Police and armed forces.
To my surprise the discussed Parabellum was a navy model. Together with some evidence provided by Martens & De Vries, in the form of a Navy present on a 'home guard' celebration menu, it appears that the Dutch Police forces had a good deal of Navy's in use. Most likely they were purchased from a dealer who secured some 1,700 German navies, captured or impounded after WW1.
The booklet is called 'Wapens en Vuurwapens', by K.W. Wijk, inspector of police, 1st class and published in 1936 bij J.A. Reesink in Velp.
It also discusses:
Walther Model 7
Sauer Model 1914
Ortgies
Parabellum
F.N. 1922
Mauser C96
F.N. 1935 (hi-power)
This offers a good overview of pistols in use at Dutch police forces during the late 30s.