Brooch with red glas or rubis

[silverfan]

Have an inherited brooch on which I read PATENT and on the little loop in very tiny letters LP , A and 2 head? A. The photos are the best I could do. What I call head can be all other thing. For me identfication is not possible. Does anybody has an idea to what country these marks belong?
Regards silverfan

[AG2012]

Hi,
I think there is small capital A for Vienna assay office (often seen as a secondary mark). Try to identify the first mark; I think it`s Austria Hungary empire for small items.
Regards

[huszas76]

Dear Silverfan!
Can you make a better picture about the hallmark? As I see, It doesn't fit. I see at the right a nr 3, but I can't see, what is in the other side.
Best regards!
Krisztián

[silverfan]

@AG2012
Thanks. Do you think the head? is the dog head for small pieces?
@huszas
Better photos are not possible.
To the left there is without any doubt a 2 and to the right there is an A. If this is the dog's mark of Austro-Hungary 1872-1922 for small pieces, it is silver 900 and assay office Vienna. Who is the maker LP?
Regards silverfan

[huszas76]

Dear Silverfan!
The greyhound head in the Austro-Hungarian hallmarks is only for 800 fineness.
There was no hallmark for small articles in fineness nr2 (900).
So if it is silver, it must be a Diana head:

(at first sight I did not see the two in the sign)
There was 10 different maker in Wien with LP monogram, but I think, it is maybe Ludwig Politzer.
Best regards!
Krisztián

[silverfan]

Dear Krisztian,
many thanks for your complete information. Politzer was an outstanding Vienna silversmith. If it is him, it is even possible that there are rubis, but I do not think so because the brooch is not gold. I shall verify this.
Regards silverfan