Hi,
The frame is a Dutch frame and it was a 1906 model which had a grip safety installed originally. Since it now is converted to a non-grip safety version, the word 'Rust' (or 'Safe') appears in the wrong position
Nice project! Hope you manage to get the gun going as it should.
Keep the ejectors and the smaller springs as spare parts. The ejector is the number one breaking part and it's never bad to be without a few spares.