Patria Aegler Rolex watches Age determination
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Origin of the brand “Patria”
- Founded: around 1892 in Bienne (Biel), Switzerland , by Aegler SA .
- Meaning: “Patria” was one of the first brands under which Aegler sold high-quality pocket watches and early wristwatches — even before “Rolex”1 emerged as the main brand .
- Around 1905–1910, Aegler supplied both Patria and Wilsdorf & Davis (Rolex) watches with the same “Rebberg” movements.
1 Hans Wilsdorf (Rolex founder) worked directly with Aegler. That is why many early Patria and Rolex movements are very similar.
Aegler numbered his works consecutively across all brands (Patria, Rebberg, early Rolex).
This results in the following approximate allocation:
| Serial number (approx.) | Year of manufacture | Typical characteristics |
|---|---|---|
| < 200,000 | before 1905 | Early pocket watches, signature often “Aegler” or “Patria Genève” |
| 200,000 – 300,000 | 1905 – 1910 | Early wristwatches, Rebberg base movement, still without Rolex reference |
| 300,000 – 500,000 | 1910 – 1915 | High-quality vineyard works, 15–17 rubies, some already used in parallel for “W&D”. |
| 500,000 – 700,000 | 1915 – 1920 | Classic Patria signature, often silver case, enamel dial |
| 700,000 – 900,000 | 1920 – 1925 | Transition to Rolex caliber 600/700, last Patria models |
| > 900,000 | after 1925 | Aegler focused on "Rolex" – brand use "Patria" largely disappears. |
Further information on dating
| feature | Chronological context |
|---|---|
| Engraving “Patria Genève” | 1890–1905 |
| Engraving “Patria Swiss Made” | 1905–1915 |
| Engraving “Patria 15 Rubis” in cursive script | ca. 1915–1925 |
| Screw balance, no shock protection | typical < 1930 |
| Flat, round structure with a bridge shape (vineyard type) | 1905–1925 |
| Enamel dial, blued hands | 1910–1925 |
Source: AI
