Ignoring the issues I/we see with the eagle, hare and what appear to me to be two sprue points
I have retrieved an image off of wildwinds of another tetras showing the crab
Rather than belabor the point and use them all I simply picked the first one listed

Now your 'specimin'


The creature below appears to be a squid ?
and the similar type which you provided

The legs of the crab are poorly rendered and the crab lacks any truly lifelike characteristics. In fact it looks like a dead crab found on the beach
Stylistically ........ it stinks !
Once upon a time .........
Not too many years ago when this forum was smaller and more closely knit community .........
My skepticism (or anyone else's) about a particular coin would have set off a spirited debate among the members.
People were unafraid to voice opinions and we had a healthy mix of young and old, veterans and 'newbs'.
Some collected late Roman some collected Severan and some collected anything.
The opinions tended to be sober even if the member was not !
I remember a few enjoyable exchanges with one member who collected the so-called invasion folles of Lyon.
That was it
That's all the fellow collected ......... in between pints of Guinness !
Sometimes people would come and post the most ludicrous fakes imaginable and then get severely bent out of shape when told the "bad news". They stormed out the "virtual" door determined to go back to wherever it was they purchased the coin and commiserate with hucksters who told them whatever they wanted to hear
"Of course it's real ! And by the way my detector 'friend' just dug up a whole pot full of Julius Caesar denarii and is selling them for $75 each !"
But of late this forum too has come to resemble some sort of mutual admiration society. Comments range from magnificent to thanks for sharing.
No one dares question anything except the most ridiculous
Or comment on anything beyond the most rudimentary
To be honest .........
I am getting bored
As to this coin ?
It's a DUD plain and simple
Send it back
I myself have bought several coins from Herr 'Z'
I am satisfied 100% with the few purchases I made
He usually gets impressive prices which limits my interest !
That said
Any dealer that sells the impressive numbers of coins that several well respected dealers move out the door on a weekly basis is going to make mistakes. In fact that is one reason I enjoy spending so much time viewing their listings. Mistakes are made and bargains can be found.
But likewise any seller listing 1,000 coins per week will make mistakes regarding authenticity. It can't be avoided.