1 in an edition of 14. Signed and dated in pencil lower right: “L. Calapai ’64”; titled in pencil lower left: “Vortex I”; numbered in pencil lower center: “1/14”. Embossed with the artist’s blindstamp lower right: “LC. imp.” Watermark lower left is “Arches”. A fine impression in fine condition with full margins (sheet: 24 x 20 inches).