1877 S gold sovereign

Hay team some one in my relationship have coin . As per you only two minted is it possible original this one too.

Si cela est vrai, je serai curieux de voir cette pièce en photo ici, sur Numista.
S'il devait la vendre, il ne serait pas loin d'être à l'abri du besoin jusqu'à la fin de ses jours.

Dear sir I don't know how post coin's image here. I don't know French but am translate your words. He is interested to sell sir.

Hello,
There are 2 known coins.
To sell, I advise you to certify the room by PCGS before.
And then put it in an auction house.
This coin will interest rich collectors.
Regards