Good evening and question

Good evening everyone.
it’s my first time on this forum but definitely not the last. it is very interesting.
I am writing to you for an item I received as a gift a long time ago, a small quartz table clock in the shape of a turtle.
Today looking at it with the lens I tried to understand what kind of metal it was and where it came from. I live in Italy.
the interior does not seem precious at all, but I was still intrigued by the octagonal mark whose engravings I cannot read well.
can you help me?
Thanks in advance