Ca. Ø30mm, ca. 28g, 18K gold, unsigned, very rare unique Art Nouveau case, possibly a work by Frédéric Charles Victor de Vernon (1858-1912), back with portrait of a lady in a forest, background violet enamelled, case band with tendrils passing from the back to the front, No. 49625, fine lever movement, enamel dial, golden hands, in very good condition, in working order, rarity.parable cases are known from Art Nouveau watches by G. Braillard, Chaux-de-Fonds, Patek Philippe and Tiffany. Aparable Art Nouveau watch was auctioned at Christies in 2021 (https:///go/7JR).