Jeff,
There is no reason for the Finns to have removed military proof marks from one of their Lugers. Your serial number suggests that this is an Alphabet Commercia Luger. Look for a crown-over-N proof on the left breechblock. If you do not see a T within a triangle on the barrel (the hallmark of Tikkakoski Oy, the usual source for Finn Luger barrels) it is probably original--particularlyl if it also has a c/N proof mark.
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