Estimate 4,500 - 5,500 €
Price Realised 5,900 €
a lot of the last auction!
18k gold, applied monogram, glazed movement.
very good, a dent.
Bridge movement, 2 hammers / 2 gongs, screw compensation balance.
very good, capable of running, cleaning recommended.
Robert Tannner worked in Biel as a watch manufacturer and watch dealer. The company existed from 1895 to 1922. This watch is probably Robert Tanner's private watch, as it bears the monogram "RT".
Source: https://watch-wiki.org/index.php?title=Tanner,_Robert, as of 10/25/2019.