Inscribed, dated and initialled 'D34, 2014 RB' (on the reverse); bearing Galerie Christian Lethert label (on the backing board). Inscribed, dated and initialled 'D29, 2014 RB' (on the reverse); bearing Galerie Christian Lethert label (on the backing board). Inscribed, dated and initialled 'D43, 2014 RB' (on the reverse); bearing Galerie Christian Lethert label (on the backing board)
