Hi Bob,
Would you mind sharing the serial number or perhaps the first 3 digits of the 6 figure number? I'm not sure which case came first or if they were made concurrently.
I have seen another "blue" lined case with German markings on the inside, where your fine example simply says Walther.
Ever seen a wooden gripped LP53 or perhaps I should refer to it as the LP52? Not sure if any examples are known?
Kind regards,
John