Alain BANCQUART (born 1934). Autograph musical manuscript signed, Étude pour Siene; 20 [+4 (3', 7', 9', 15')] sheets 37 x 27,5 cm. Piece for violin, viola and two cellos. The title page gives indications for the tuning of the instruments, and explanations of particular signs. The manuscript is carefully notated in Indian ink on tracing paper with the 16-line musical neocopy mark; there is no copyright mark; the work seems to have remained unpublished.