Pencil, paper Dimensions: 20 x 18 cm Signed and dated lower left: "J. Z. 51" Verso inscribed, dated and signed: "Mojžíš – 74281, P. 8. V. 1951 – Jan Zrzavý 86"   Provenance: significant collection of Emil Gilels (acquired by Emil Gilels from Jan Zrzavy)   Exhibited.   Consulted with Professor Jaromir Zemina, Dr Karel Srp, Dr Jiri Machalicky and Alena Havlikova.   Confirmation of authenticity attached.