Yes, take a look for different inletting that doesn't mach the shape of the trigger guard tangs. The front of the guard has not been inlet and the screws, front and back, appear to be relatively modern.
Thanks for posting the pictures, it is an interesting rifle and most certainly Dutch. It is not a military gun. Being European, the style of the guard is different than we are used to seeing here in the U.S. but it is later than the rest of the gun, maybe even dating to the percussion era when the rifle was converted from flint to percussion.
