Help with identifying metal

[mintymin]

Hi everyone
I recently bought a brooch that i thought was French silver. I saw the diamond shaped mark and what a assumed was the boars head.
On further inspection i realise it isn’t silver but i cant seem to recognise the marks to make out what it is. The diamond shape looks like it has S at the top and bottom and 13 in the middle? This isn’t a mark i have managed to locate as they usually have initial and symbols in.

It is fairly heavy but doesn’t react to a magnet so maybe steel is out and the stones are paste.

I am wondering if it is chrome or other metal but don’t know if they would stamp non precious metals. I would appreciate you casting your knowledgable eyes over it.

Many thanks Amanda

[legrandmogol]

Someone might know offhand what it is but your last pic is blurry and the photobucket logo is covering one of the marks

[mintymin]

Many thanks for that
This is another go on another site. They are quite small marks but this is through the loop.
Fingers crossed

[dognose]

For those who will not click on thumbnails:





Trev.

[mintymin]

Thanks Trev
How did you do that please?
Didn’t have a problem with first lot (except for logo!) but the next site did them tiny. I did them as thumbnails for forum
Thanks

[dognose]

Hi,

Click on 'Share', then a drop-down appears and copy and paste 'Hotlink for forums'.

Trev.

[mintymin]

Got it thanks Trev

[legrandmogol]

Defintely 800 silver. You are right about the boars head. The other mark is a makers mark though I don't know who the maker is. The piece is possibly plated in rhodium which was common midcentury and is when this piece dates from.

[mintymin]

Yes that makes sense. I never thought of that.
Many thanks for the confirmation.