S /42 G-date

hi guys,

in a small gun-shop i found a disassembled Luger in original condition. it is (was)completely matching, including the mag. it has 95% bluing. looks great.

then i saw something terrible that made my heart bump!

the trainee got this gun from the shop-owner for training to blue guns! she (it's a girl) grinded the good side-plate and the safety-lever so much, that the sn could only be seen a little bit. what a pity! i think, that i could buy it for a low rate, but is it a good deal? is it a fake, if i reblue the two parts? your opinions please.