WW2 German 1935 Saar remembrance badge

This is a WW2 German 1935 Saar Loyalty Commemorative Badge. (Saar Erinnerungsabzeigen).

2 persons shaking each others hands with beneath it “Saar” and “1935”.
Above the eagle “Treue um Treue” (constant because of loyalty).

Badge has a horizontal pin on the back.
Bit of corrosion on the back, so needs a bit cleaning.