[amd6547]

I can't speak to all nazi HiPowers, but I had experience with one.
At a gun show, my friend bought a chrome plated, well used example of a late war HiPower. It appeared well used, had moderate pitting, and looked like it had been chrome plated a long time ago...like so many war trophies.
It came complete with cheap fake mother of pear grips...all for the cash price of $175.
We shot the heck out of that HiPower. Maybe a couple thousand rounds, many Rapidfire with 30rd mags.
With the pearl grips replaced With Pachmayr's, it looked pretty good for an old warhorse. The bore was dark, but mechanically, it looked great...lugs and lock cam looked great, and slide, barrel, frame fit were smooth and tight. Who knows how many thousands of rounds were fired through that pistol before we got our hands on it....probably all on the original springs.
With all that said...if I owned the OP's HiPower, I would cherish it, preserve it, and shoot it...a lot.