Millesimal fineness .900, meaning very late 19th century or 2oth century.
Lack of complex marking systems can eliminate several countries e.g. Britain, France.
Lack of characteristic official state marks can eliminate many countries i.e. Spain, Netherlands,Austria.
Likely Germany or Italy and rather newer production.
Unless similar item with the same maker`s mark is found with more specific marks, country of origin would be impossible to identify.
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