The pistol on FGS is a Vickers. Not a Dutch contract, but one prepped as a gift/presentation pistol.
I've seen blued safeties on reworked Dutch lugers, triggers are usually strawed with most strawing missing, leaving a blackish spotted surface.
These Dutch guns had a hard life and they should look that way. The pistol on Simpson's website looks way too nice and was probably refinished by some US 'arsenal'
Here is a Vickers that survived Palestine after it survived Dutch East India and WW2.