DR,
* Are digital pictures possible?
* "cyq" or "cvq" is the wartime code letters for the manufacturer - Spreewerk. Is a lower case alpha letter also present with the numeric 7271 S/N? Even a "No-letter" suffixed pistol S/N would be 1942 vintage, at best, and would likely bear the manufacturer's code letters "cyq". The pistol likely post dates the holster although it is not uncommon to find a P.38 in an earlier Luger holster. They just were not issued that way as a rule. Battlefield contingency/GI rig assembly make for some strange combinations.
* Does the pistol bear all matching part S/N's (4 places - slide, frame, barrel block, & locking block)?
* What is the amount of original finish/condition. Grips correct? Bore condition? Has it been reblued, touch-up blued or post war "dipped".
* "Voegel" is the holster's manufacturer, "Koln" is the manufacturer's city, "1939" is the year of holster fabrication, & "WaA387" is the Waffen Inspector's acceptance stamp for the holster. A WW2 military P.38 holster would be marked "P.38" on the rear right of the two belt loops.
* Does the holster's strap close with a buckle and is the strap angled down from the top? Or does it close with the strap simply drawn through a metal loop or pin to a stud? Condition is ??
* Is the barrel's N853 in one line or is the N above the 853? Is the N surmounted by a crown? If the latter, the pistol was likely rebarreled Post WWII by the East Germans. A VOPO does not yet command a WW2 collector's price; although, sometime in the not so distant future it may.
* $1K sounds high for even a mint WWII Spreewerk P.38. The holster does not yet sound like a contemporary P.38 holster. Retail + if you will. Too many unanswered variables yet to assess. We're talking a $400-$850 spread right now.
* Hoping to hear your response. Pictures would be very helpful as condition would also be displayed adding to a more rational & focused price estimate.