Hi, and welcome to the forum.
You need sharper pictures of the markings. Try taking your photos using a tripod; natural shaded light outdoors and the camera's self timer (to eliminate camera shake).
Clearly show the bases of the magazines, their profiles and other markings and the leading (left) edge, the strap and buckle, and back markings on the holster and loading tool.
Is the serial number "239c"?
The 1940 code "42" Luger you have was manufactured by Mauser in Oberndorf building "D" in 1940.
Look at the inside of the trigger plate. What number is stamped there?
Your Luger looks to be in original finish, and (if all matching) is probably worth $1700 + depending on condition of the finish. If the two magazines are matching add another 35%. If the holster is correct add $225 and if the tool is correct add $85. Insurance values would be higher. Look at a retail dealer (like Simpson's Ltd, checkpointcharlies.com or FGSFirearms) to get an idea of what they sell them for at retail.
The finish on the holster looks unusually shiny in your photos. Don't keep your Luger stored inside the holster. The tanning chemicals can damage the metal finish.
Marc
__________________
 Igitur si vis pacem, para bellum -
- Therefore if you want peace, prepare for war.
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