42: BERNARD STEFFEN (1907-1980) PENCIL SIGNED LITHOGRA

A scarce image titled 'S-Curve' a circa 1940 lithograph pencil signed lower right, ink stamp verso reads Dec/40, image measures 9.5 x 8.25, sheet size 16 x 10.75 inches, custom mat, no frame.
Good condition, not laid down, clean, no damage, stain or repair, the top margin and side margin have been trimmed close to the image.
$600 - $1,200