The photograph of the Luger presented above is not of sufficient quality or detail to be able to come to any conclusion about the characteristics of its surface blue.
Some speculation based on observation and logic below, followed by answerable questions.
I have noticed correct and matching Lugers where the condition of the sideplate is a bit different from the condition of the rest of the gun--usually a bit more rusted or pitted, if the gun is use worn rather than pristine. In my minds eye I recall Lugers where the bluing of the barrel appeared faintly different under close observation, as well.
Without certain knowledge, I suspect that barrel steel is a different grade from the steel which makes up the rest of the gun. My observation of side plates leads me to speculate that these are different, as well.
I would expect steel of different grades to accept bluing differently, and thus to appear slightly different after decades exposed to the environment. I have seen, and we have all had pointed out, that salt-blued extractors, for instance, 'plum' easily.
Can anyone here speak authoritatively about the grades of steel used in various parts of the Luger, and can anyone (Thor??) comment on the bluing characteristics of these various parts?
--Dwight
|