Dwight,
In "The Gun Report" article I mentioned, above...Kenyon surmises a small number of possibly 50- M1903 French guns. At the time of his article, he cites SN 25019 and 25035 known to the author. He also adds by SN 25074 the main spring (flat in the M1903's) went to a sprial spring as noted on a commercial M1906 Navy gun.
From your most recent update to your Commercial Luger database, I see some other numbers have fallen into the M1903 French SN range :
25012
25013
25019
25024
25025 (Fake notation, Santa Barbara gun shop gun...)
25026 (Fake notation, Santa Barbara gun shop gun...)
25031
25035
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