Ex-Libris - Leo Winkeler is an Artwork realized in 1930 s., by Artist Jocelyn Mercier Etching on paper. Hand Signed and dated on the right margin. The work is glued on ivory cardboard. Total dimensions: 16.5 x 10.5 cm. Good conditions. The artist wants to define a well-balanced composition, through preciseness and congruous B./W. colors. This piece is attributed to the mentioned designer/maker. It has no attribution mark and no official proof of authenticity, however it is well documented in design history. I take full responsibility for any authenticity issues arising from misattribution