'kw64': Your Stock and hand-guard look like nice Italian walnut ones. I believe your Model 1899 carbine, #235485, was built around November, 1899. The 'knob-less' striker-rod is probably correct for your carbine's number range. The Stock 'cartouche', dated 1901, probably indicates the Stock was switched by someone or during a rebuild. Your 1901 rear-sight is a rifle base that someone has stamped with a "C". A 1901 carbine base is marked to 5 (500 yards) and the "C" doesn't look right on your base or the edge of the leaf. A carbine leaf goes up to 23 (2,300 yards). More pictures will allow more observations.

(photo of a real 1901 carbine sight attached).

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