Hello a seller has this medal and I would like to have your opinion on authenticity ... Thank you in advance for your help. 

Kind of late on this one, but my 2 cents worth is that it is absolutely a repro.  If I can dig MY REPRO out of one of my piles, I'll post it as another example ... of phoney baloney.

Ok thank you👍

Just a note, 99% of these you see are fake. They turn up everywhere. Very easy to fake. Dave

I agree.  The warrant disks are among the most reproduced Third Reich items, although they do tend to be well ~ made.

Here is a genuine one for sale on a well known dealer’s web page. Compare the thickness of the lettering to the one you posted. Yours is a poor copy.

There is a really good book on these "Warrant disks" by Don Bible for any who has an interest- out of print as usual but the minor cost will save save you hundreds.

Also, your disc is not Gestapo. It for the municipal police.