Hi, and welcome to the forum.
I can't make out the suffix letter in your photo of the front of the frame serial number.
If it's a "k", your Luger would be a "DWM Alphabet Commercial" from the 1923 timeframe in Weimar Germany. If it's a "p" it would be 1924 or so...
The grips you installed are of a type used by the Russians on rebuilt captured Lugers.
Marc
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 Igitur si vis pacem, para bellum -
- Therefore if you want peace, prepare for war.
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