Meaning of XX mark on jewelry

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Meaning of XX mark on jewelry

Postby muraille » Tue Nov 10, 2009 11:19 am

I have 3 pieces of jewelry with different gold content but each with this XX mark on them. Can you help me determine what it means?? Thanks.

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Postby oel » Tue Nov 24, 2009 3:20 pm

Hi Muraille,

In Jan Divis book "Goldstempel aus aller Welt " #435 XX stands for and I quote: Polen, ab 1963; Ungultigmachung des Stempels.
I believe in plain English "unvalid making of hallmarks", do not ask me why, because I do not know?



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Postby muraille » Thu Nov 26, 2009 7:49 pm

Thank you, Oel. It is strange, because the gold content marked on the pieces checks out to be correct...

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Postby admin » Thu Nov 26, 2009 8:08 pm

I believe this is a maker's mark, perhaps conjoined V's or VW or MW. Something along the lines of Wilhelm Muller's mark, see:
Of course, not including an image of the object always limits the possibility of a positive ID.
Regards, Tom

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Postby muraille » Mon Dec 07, 2009 4:26 pm

Thanks Tom, this sounds like a good possibility as I received these items from a person of German descent. Following is pic of brooches. First question was re the white gold one. Second one in yellow gold has a slight modification on the XX theme as the gold content is preceded by the omega sign.
Hotlink at

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Postby JAKJO » Mon Dec 07, 2009 8:47 pm

In a recently published book by Fritz Falk about art nouveau jewellery the Omega maker´s mark is shown (p 326) and it is Friedrich Zerrenner.

FALK, Fritz Jugendstil-Schmuck aus Pforzheim: Art Nouveau jewellery from Pforzheim, Stuttgart : Arnoldsche, 2008

F Zerrenner
Berlinerstr 14
Pforzheim, Germany D-75172
Tel: +49 7231 106091
Fax: +49 7231 3575 83

Hope this helps
Best Regards/JAKJO

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XX mark = Wilhelm Müller, whole seller, also for jewellery

Postby silverport » Tue Feb 02, 2010 7:14 pm


XX mark was trade mark of Wilhelm Müller (founded 1847) in Berlin, with dependancy in Pforzheim.

Wilhelm Müller was whole seller for jewellery in gold and silver and silver hollowware and flatware.

Many products were already struck with seller's mark XX by the producer in factory's or workshop - without any »maker's mark«, also on products of important producer. Additionaly were struck two minuscle letter - XX-internal code for identification of maker's origin.

After WWII Wilhelm Müller moved under dramatic circumstances to Schwäbisch Gmünd - held there her centenary.

In 1981 their main business was whole seller of jewellery; Adress: Wilhelm Müller KG , Schwerzer Allee 5, Schwäbisch Gmünd.

Kind regards silverport

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