Irma Blank (Celle 1934) "Avant-testo, 21-9-02" 2002 ballpoint on canvas cm 23.5x23.5 Signed, titled and dated 21-9-02 on the reverse Provenance Private collection IT "Avant-testo, 21-9-02" 2002 biro su tela cm 23,5x23,5 Firmato, titolato e datato 21-9-02 al retro Provenienza Collezione privata