Featured William Spratling brooch?

Here I am again with yet another question.
So I bought this brooch for a song a few days ago. It was in a lot that came from Italy. I only saw one picture of it from the front. From the picture I thought it could be silver, and indeed, it is. I m not good at determining stamps, so you can imagine my surprise when I noticed this stamp was used by famous silversmith William Spratling from Taxco, Mexico.
I think I saw the stamp is from 1960-1964, but the eagle stamp is not right. From what I could see, it should have a 'eagle30' stamp and this one has a 'eagle 63' stamp.
Can someone please take a look and tell me if my brooch is a true William Spratling or not?
Here in Europe we dont often see these sort of brooches, and we definitely dont have any experience in right/fake stamps of this artist.
Thank you very much!

 

Great find, and charming, neighbour.
William Spratling used Eagle 1, 13, 30, and 63.

Regarding authenticity, it looks good to my equally European eyes, but just to be sure, tagging @reader .

 

Any Jewelry, thanks for the support! I seem to buy lots of newer jewels for beeing an antique jewelry collector

 

You're buying beauty, that is ageless.

 

@DragonflyWink

 

SCORE! I'm no Spratling expert, but nobody and I mean nobody marks a fake that badly.

 

Evelyb30, right, no? If I were in the counterfeit-business I would try my best to make a really pretty fake mark.

 

Beautiful! What is the brownish coloration....enamel?
Tortoise shell? Horn?

 

Or at least readily legible. Otherwise why bother? I can't see anyone faking a high Eagle mark either, unless the knew what the marks were really supposed to be.

 

looks like horn...

 

I read somewhere it is fake tortoise

 

Looks good to me. I know it was made in both rosewood and tortoise. If selling on the internet just list it as sterling.

 

Thank you all for your opinion! Looks like I got really lucky with this libelle/dragonfly
Reader, thats the problem: things get IN my collection but no good stuff ever leaves

 

if it's real shell, probably just as well. It's not illegal to own, just illegal to sell.

 

Very nice brooch -- Love it!

 

Total score. Absolutely original.

How lucky to get this in a lot!

 

Thanks for tagging me, Peggy - though it did give me a sharp pang of envy...

As already said, looks 'right', and Spratling used real tortoise shell - and not something to be noted if selling, collectors will know the material.

~Cheryl

 

Great find! What a lovely brooch

 

I knew this piece basically checked off all of your boxes.

At least @Dessert58 knows if she ever tires of looking at it there is a loving home just waiting for its arrival.