Rick, if the shop will allow you to take the pistol down for examination - and they should at the price being asked - to verify that the serial numbers internally are matching, look at the inside of the frame and slide. They should still be "in the white".... no bluing on the inside. That would be a fair indication that the gun has not been reblued as rust blued Lugers (ALL 1906 Lugers were rust blued) will be "white" inside. If a Brazilian Contract barrel was used by the factory, it may have been blued separately from the slide and frame and thus have a slightly different coloration to it.
Let us know if you decide to purchase it and please post some pictures.
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