Two of the most recent three rifles I've seen advertised as FN 1900 rifles appeared to be fakes, or at least misrepresented in part, in my opinion -- mix-masters of some Remington Model 8 parts, some authentic FN 1900 parts, and possibly some Model 8 parts altered to look like FN 1900 parts. One gun looked mostly correct but did not have an original FN 1900 stock set, sling swivels, or charging handle (though it was described as "all original, excellent condition"). The second one actually had its serial number scrubbed, and the receiver polished and re-blued where the serial number should have been. It was described as having "no visible serial number." In fact, it also had no Belgian proof marks at all, as far as I could see. The stock set was close in profile and overall shape to the FN 1900, but the checkering was wrong, done in none of the three known FN checkering patterns. Most importantly, it was chambered in .30 Rem and stamped "30" on the barrel, receiver, and bolt, but according to Woodall the FN 1900 was chambered exclusively in "calibre 9mm" (equivalent to .35 Remington). Watch out for these, and make up your own mind about them if you see them.