Grönefeld

Founded 2008 by brothers Bart and Tim Grönefeld -- fourth-generation watchmakers known as "The Horological Brothers" -- in their hometown of Oldenzaal, near the German border. The 1941 Remontoire won the GPHG Men's Watch prize in 2016. The second Netherlands-based brand in the catalog alongside Christiaan van der Klaauw. Grail Atlas catalogs 3 Grönefeld references from Oldenzaal, Netherlands across 1 collection. Each entry lists market-value bands, production era, brand tier, and what to check before buying.

• 1941 Principia · 1941 Principia

  enthusiastmodernGrönefeld Calibre G-06 -- in-house automatic, 21,600bph, 56h PR, 31j, 226 parts; 22ct solid-gold micro-rotor on a ceramic ball bearing, Swiss lever escapement39.5mm2018–present
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• 1941 Remontoire · 1941 Remontoire

  enthusiastmodernGrönefeld Calibre G-05 -- in-house manual-wind, 21,600bph, 35h PR (constant force), 36j, 258 parts; one-second remontoire d'égalité (satellite gearing, hypocycloidal gears), hacking seconds; GPHG 2016 Men's Watch category winner39.5mm2016–present
  Open
• 1941 Grönograaf · 1941 Grönograaf

  enthusiastmodernGrönefeld Calibre G-04 -- in-house manual-wind, 21,600bph, 48h PR (30h chronograph), 45j, 408 parts; column-wheel chronograph, instantaneous jumping minute counter, soft-reset mechanism; limited to 25 pieces in tantalum ("Premiere Edition") and 188 pieces in stainless steel (213 total)40mm2022–present
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