Older Browning High Power Pistol

[SFG(A)]

Recently ran across a B. High Power, excellent shape, 98% on the blueing, box, instructions and one magazine. On the forward end of the grip are the following letters and a number,
LGK K over 1019. I assume that this was a Police pistol because of the markings. Does anyone have any ideas about the markings? Thanks in advance.

[ebeeby]

Probably Austrian Police contract - 50's gun. The mags were also numbered to the gun. Nice example of the HP.

[SFG(A)]

Thanks, I am also had a question concerning the serial number. I read that from 1954 the serial number range started at # 70,000?