Name: Maritime object - Plath-Geomar - Bronze
Brand: Plath-Geomar

Jeroen Janssens

Maritime Decor Auction

Vintage Plath-Geomar screw log – antique nautical instrument

For sale: antique bronze marine log, made in Hamburg (Germany), brand Plath-Geomar.

Navigation instrument used to measure a boat’s speed and distance.

- Complete set with:

original base
brass tow-propeller (4 blades, marking “O.T.N.”)

- Readable dial with 0–100 scale and a secondary dial
- Antique item, ideal for collection or marine decoration

Condition:

mechanism blocked (to restore)
hands move manually
oxidation visible
glass missing

Item sold as is, for restoration or for the collector.

Ancien loch marin à hélice Plath-Geomar – instrument nautique vintage

Vends ancien loch marin en bronze, fabriqué à Hambourg (Allemagne), marque Plath-Geomar.

Instrument de navigation utilisé pour mesurer la vitesse et la distance d’un bateau.

- Ensemble complet avec :

pied d’origine
hélice remorquée en laiton (4 ailettes, marquage “O.T.N.”)

- Cadran lisible avec graduation 0–100 et cadran secondaire
- Objet ancien, idéal collection ou décoration marine

État :

mécanisme bloqué (à restaurer)
aiguilles bougent à la main
oxydation visible
vitre manquante

Objet vendu tel quel, pour restauration ou collectionneur.

This estimate helps guide you when bidding. It’s carefully calculated based on demand, quality, rarity, and ownership history. We can't guarantee the object will sell, resell, or appraise for this amount.

Maritime object - Plath-Geomar - Bronze

Germany - 1940-1950

France

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Bronze vintage marine log instrument by Plath-Geomar, made in Hamburg, Germany, dating to 1940–1950, weight 3.212 kg, origin Germany with region listed as Espagne, complete with original base and a brass tow propeller (4 blades, marked “O.T.N.”), readable dial (0–100) and secondary dial; mechanism seized, needles movable by hand, oxidation visible, glass missing, sold as is for restoration or collectors.

Maritime object - Plath-Geomar - Bronze

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