Spanish 10 centimos 1870 coin uniface

I have recently found a Spanish coin. Obverse shows seated Hispania facing right 1870 with diez gramos.
The reverse is blank.
It weighs 9/10gr and is 1.6mm thick. Is it possible that two planchets were stuck together when it was struck, or would it have been a test piece? It seems in fairly good condition but looks like it has been in circulation.
Can anyone tell me anything about it, if this is a rare coin, and, if so a possible value?
Many thanks
reggie

A picture would help but I think it is this one:
https://en.numista.com/catalogue/pieces2735.html.
This coin have circulated during many years and its grade is normally very, very bad.
No surprise if one face disappears, unless it is a mint test.
Only a picture can make it clear.

Цитата: "monge"​A picture would help but I think it is this one:
​https://en.numista.com/catalogue/pieces2735.html.
​This coin have circulated during many years and is grade is normally very, very bad.
​No surprise if one face disappears, unless it is a mint test.
​Only a picture can make it clear.

​Hello Monge,
thanks for your response, I will try and attach a couple of photos of the coin.
At first I thought the coin may have been filed flat but the planchet is still of the right thickness
and weight.
Thanks
Reggie

The blank side still shows remains of the inner circle.
It also shows evidence of strong abrasion.
If a new disk is minted while the previous coin is still in the die it would show an negative image and it is not the case.
If you check the correct weight with a precision scale you will find something near the 9 g.

In my opinion one side has just been erased by the owner and a nice coin has been ruined.