Jean, very nice to have you on the forum. I lived in the Netherlands for 7 years, and visited much of Belgium many times, wonderful country.
Some Vopo's are barely messed with and you would not know it was a vopo gun at all. Of course, it could have been sold as a vopo and not have been one
Yours has vopo grips and the barrel I am pretty sure is a replacement. not sure about the marking above the serial number and before the marking of 9mm
Ed