Rare large tula (niello) enamel silver locket pendant
by Martin Mayer, Mainz
by to open with slide mechanism, from 1910
with two frames without glass
with alternating black tula enamel and silver stripes
in different sizes
to open with slide mechanism
marked: 800 and makers mark of Martin Mayer, Mainz
in a good beautiful condition
Height: 5,5 cm
Width: 3,5 cm