Watercolour, 43 x 57,5 cm, lo. ri. sign. P. Kayser, matted a. framed under glass, uninspected out of frame. - Painter a. graphic artist, studied at the Munich a. Dresden schools of applied arts, co-founder of the Hamburger Künstlerclub, member of the Hamburg secession, friends with A. Marquet. - Mus.: Hamburg (Kunsthalle, Altonaer Museum, Museum f. Hamburgische Geschichte a. others), Freiburg, Husum. - Lit.: Rump, Der Neue Rump, Vollmer a. others.