Russian Empire, St. Petersburg, brooch, unidentified mark

[novichok]

Hello!
I bring to your attention a brooch made in St. Petersburg with an unidentified mark of the maker, probably IW.
I would be glad to receive information about this mark.
Kind regards, Alex

[AG2012]

Hi,
I understand marks are too small but more info is needed.
There is 583 (red arrow).Later re - strike in USSR ?
Are original marks completely obliterated? (56).
What`s the small mark beside 583?
There was Johan Warjus but I`m not sure if he made jewellery (mid 19th century).
How is the needle fixed to the brooch? Are there traces of soft solder ?
The brooch frame being hollow could not be stamped and when repaired or needle replaced soft solder is the only solution.
Why is needle of different gold colour ?
Inspect closely and tell us.Thank you.
Regards

[novichok]

Hello,
Sorry that I can't respond right away.
I attach a photo with the re-strike of the USSR.
I attached photos of all the marks.
I now do not have a brooch, but I can take it and answer questions about the solder and color of the needle.
I attach the information I found about Johan Warjus.
He is known as a silver maker. Gilding ?
Kind regards, Alex
postnikova_loseva_m_m_ukazatel_russkih_kleym_na_izdeliyah_iz_drag_met
http://podarok02.ru/art/66-Zolotihi_serebryanih_del_mastera_i_yuveliri_SanktiPeterburga_1849i1917.html
http://skurlov.blogspot.ru/2013/05/1849-1917.html
http://www.pseudology.org/Bank/Ivanov_MasteraGoldSilverDela1a.pdf

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[AG2012]

Gilding ?

Not gilded. Soviet re-strike .583 proves it`s 14 K or 56 zolotniki.
Hammer is clearly seen (1927-1954).
Different gold colour is curious.Russian masters liked rose gold and it turns to yellow gold when heated for soldering and pickled in acid. (Copper in the alloy dissolves, at least on the surface but deep enough to change the colour).
We never managed to preserve rose colour when repairing Russian gold. Possibly something new has emerged lately
If and when the brooch ends up in your hands we`ll be able to discuss all issues. Until then that`s all I can tell.
Regards

[novichok]

Hi,
I photographed the brooch. It can be seen that the needle and the loop are soldered. The color of the needle seems different because it’s polished by hands.
The axis is made of steel???
In St. Petersburg in the 19th century, the jeweler Johan Worbs worked. Its mark was JW. He worked with gold.
Regards
Alex

[AG2012]

Soldering looks OK.
The rod passing through three tubes in ``C`` clasp was sometimes made of different metal (possibly because gold is too soft).To be honest, we did not pay too much attention to this detail.
Image A is tube hinge of Russian brooch in this link.

viewtopic.php?f=28&t=38867&p=106548&hilit=russian+brooch#p106548

Image B is tube hinge on a Vienna Biedermeier brooch.Both are of different colour, possibly copper wire.



All said, I think it`s authentic.Assuming that ``C`` clasp and the needle were transferred from another 19th century brooch is rather paranoid.On the other hand, that`s the problem without marks on the brooch itself.

[novichok]

Hello,
I found the mark's photo of Johan Warjus and made new photos of the brooch mark.
Kind regards, Alex