Two Formula 1 design concepts and another racing car drawing by Enrique Scalabroni, an F1 racing car external design concept, original impression, ink

Two Formula 1 design concepts and another racing car drawing by Enrique Scalabroni, an F1 racing car external design concept, original impression, ink over pencil, signed and dated 1997, plus a photocopy of another, amended in felt-tip pen and titled F1-1995, 8-2-94, OPTION 8 (A), signed and dated 94, also an original concept drawing of a Formula Nissan single-seater radial radiator cooling bodywork design, ink over pencil, front elevation and isometric views, signed and dated 24-9-94, all three on A4 paper (3)