hallmarks on exterior of wide wedding band

[ESG]

Hello. I have a wide antique wedding band that has the following marks on the outside. I assume the band is silver but I suppose it could be platinum or white gold. I've searched for the marks but I've come up empty.

There is an A at the top of the mark on the right. That's all I can make out for sure.

In the mark on the left there is what looks like a 5 turned on its side at the top of the square. But that may be my aged eyes playing tricks.

The ring is 7/16" wide and weighs 0.3 oz on my postal scale.

Does anyone have any ideas? Thank you in advance.

[AG2012]

Hi,
It is Porto, could be both gold and silver: if an eagle, then it is silver, if a deer (antler) then it is gold.
See here:
https://www.925-1000.com/Fportugal.html

Regards

[ESG]

Oh thank you so much! I see I have at least one of the marks upside down.

[ESG]

800 gold is my best guess

[silverly]

No expert on this subject at all, but the mark looks like 833 to me.

[AG2012]

Try this link, too.
It looks like older mark for Porto .833
https://www.925-1000.com/Fportugal1938.html

Regards

[ESG]

yes I see the 833 now

many thanks!

[ESG]

Okay I see what you mean. So it is silver. Not gold.

[ESG]

Can anyone point me to Portuguese manufacturers marks? Would love to suss out who exactly made it.

[ESG]

Also many great thanks for the answers. It's very kind of you all to take time to help.