I'm attaching photos of a small Russian enamel egg: it's a pretty well done apple green enamel egg, with sunburst guilloché enameling in the center, contoured by old cut/rosé small diamonds.
I can clearly see the 960 fineness for silver, then the 585+kokoshnik shovel hallmark for the gold content (I'm assuming the gold bail and the small connecting ring itself).
But in the end there's another hallmark in an arrow form I couldn't work out: is it a workmaster mark or kind of a town mark?
Maybe it's something from the USSR period? I'm asking since I've found something similar hallmarked into some USSR objects .
Could you please let me know?
Many thanks to every kind reply!



