EW,
It is the faint "white lines" around how the toggle lock indent piece is machined and pressed into and then soldered into the right frame rail.
It is silver-soldered in place and on most (BUT not all...) M1900's, the area of the solder lines does not take bluing well.
If I do not see the faint white lines, I do not immediately conclude the gun is refinished...just that one area may not be right and other "tell" areas would need a closer look as well.
BTW...I like the "age spots" showing on the strawed parts of the Simpson LTD photo I posted up...
|