Bergtannen. 1920. Etching. Dube R 349 a (of b III). On firm, slightly structured wove apper. 25 x 20 cm (9.8 x 7.8 in). Sheet: 33,7 x 29 cm (13,2 x 11,4 in). Verso with a pencil sketch with watercolors, which presumably was intended for a larger sheet. Very rare, only one copy from this state is known of.
PROVENANCE: From the artist's estate (verso with the estate stamp of Kunstmuseum Basel (Lugt 1570b) and the hhand-written registration number "R 330 I". Private collection Southern Germany.