Trying to identify the base of a countermarked coin; Spain/Azores

While researching a question posed today I came across this item:

N#27874 

It is nominally a counterstamp on an 1871 coin, but the pictured coin doesn't make sense to me. The obverse is dated 1871 but I only see the reverse on coins dated 1877 and later. (I looked in Numista and Krause.)

Am I missing something?

If not, should we update the listing to say is it a countermark over a counterfiet? Or remove the reverse image and description?

Hello 🤖

Without pictures, it will be very difficult for anyone to help you. Could you please post clear pictures of each side of your item?

Please note that this is an automatic message. Feel free to ignore if it is not relevant.

Aa I said previously there is no damage on reverse so it's not an actual countermark.

I agree with the lack of deformations in the image , but that doesn't address my question: Does this Numista page represent a genuine coin? If not, what should be done with the page?

There is a reference : Gomes# L1 31.xx

It would be great to know what Gomes says about this item.

But the catalog number doesn't seem to be useful. There are three different Numista pages with the reference code Gomes# L1 31.xx. It might be “anything that denomination with that countermark”, but since the apparent base coin pictured isn't in Numista or KM that doesn't solve my question.