Telltale Signs of a Refinished Luger

[4 Scale]

Here is an invention to detect re-blue. These used to be used a lot in manufacturing, not so much anymore. Therefore they are fairly cheap on Ebay.

My experience is that all Lugers have some degree of finish loss/corrosion, even high-condition Lugers viewed with a microscope. On refinished pistols such areas are blued, on original pistols such areas are not blued.