The modern, clip-loaded Model 1889 Mauser chambered in 7.65x53 mm was used by Belgian troops to slow down the German onslaught in 1914. It was superior Belgian marksmanship and the Model 1889 that gave the French and British time to pull off the "Miracle of the Marne."
I purchased two Belgian-made FN Mauser actions many years ago. They have consecutive serial numbers. I have been unable to ascertain even an approximate date of manufacture. The importer at the time was “Firearms International Corp.” When were they made?