Help needed with bronze coin please

[threbu 2]

Hello, I am in need of help in identifying this unknown bronze coin.

It is quite worn, but the words I can make out are "DEI GRATIA" and possibly "STALLER" or "STALLER i", which apparently is a word of Danish/Norman origin.

It weighs 3.21g and is 26mm / 1" across.

Any help would be much appreciated!

[Peckris 2 2,043]

There's also DEI GRATIA on the reverse. It could be STAL or STAI. Then LERIO or possibly LEPID or any combination. 

I tried Googling but nothing has come up, sorry. What I would guess is that it looks like something from the mid 17th to late 18th Century.

[mrbadexample 985]

It looks Portuguese to me. Something like this? https://en.numista.com/catalogue/pieces35272.html

[Peckris 2 2,043]

I think that's the obverse identified - Maria 1 of Portugal. The reverse could be something like this:

Except it's upside down in the original image. 

What looks like STAL could well be ET AL following (perhaps) PORTUGALIAE. AL being the start of ALGARBIORUM, which the website says is the Azores, though I'd say that Algarbiorum is the Latin name of the Algarve, which is close enough. If correct then this is almost certainly a Reis denomination, though quite which I don't know enough to say.

[mrbadexample 985]

8 minutes ago, Peckris 2 said:

If correct then this is almost certainly a Reis denomination, though quite which I don't know enough to say.

5 reis at 26mm, it would appear? https://en.numista.com/catalogue/pieces38648.html

[threbu 2]

Thank you so much for all your help! It's great to be able to finally identify it.