Here are the results of the XRF analysis of the statuette.
According to the analysis, the alloy consists of approximately:
- Copper (Cu): 90.84%
- Zinc (Zn): 7.59%
with small traces of other elements.
The person who performed the XRF analysis told me that modern reproductions and decorative copies are typically made from much cheaper alloys, often zinc-based or aluminum-based materials. In his opinion, items with this type of high-copper alloy are generally not used for modern mass-produced copies.
The measured specific gravity is approximately 8.1, which is also consistent with a copper-based alloy.
In addition, the overall appearance, surface wear, oxidation, and casting characteristics strongly suggest that this is an old object rather than a recently manufactured reproduction.
I would be very interested to know whether these results are consistent with the materials used for original Longines display pieces from the early 20th century.