Well it is a dog tag (Erkennungsmarke) for the SS-Standarte Der Führer, 7th company Soldier number 3. The stamping looks to be original, the value is hard to determine for such a disk.
information here: Lexikon der Wehrmacht
Looks like 2 halves re-soldered together, especially from the reverse side.
Please price of 300-500 euros, plus or minus?
Hello dog tag is my and it was not soldered , he was bent.