Blade and notch sights, with holes for dot inserts. The left side of the slide is marked "COLT DOUBLE EAGLE/SERIES 90" and the right is marked "COLT DOUBLE ACTION/45 ACP", with the two line address stamped on the right side of the frame next to the serial number. Grips are checkered with "COLT" imprints. According to the included factory letter, this pistol served as a test prototype. Magazine absent.