Lustroloy Cap and Barrel (stainless steel) with gold filled bands and clips.  Sold by Parker as the "Flighter". Brushed finish.  The later version eliminated the gold bands. Less Common Cap

Late production Lustroloy Cap and Barrel (stainless steel) with gold filled clips, ca. 1957.  Sold by Parker as the "Flighter".  Brushed finish.  The earlier version had gold bands.  Caps are unique to this pen and are of a unique design.  The cap lip was removed, as in much later versions, but the inside clutch was still of the "window" style.  No halo logo on caps. Uncommon Cap

Sterling Silver Cap and Barrel with chrome clips.  Canadian production.  Design is of tapered lines.  This version was never made in the U.S.  Rumors exist of a fountain pen version.  There is an almost identical-looking version Made in England, but those are marked as RSilver or rolled silver, essentially silver plate. Rare Caps

Gold Filled Cap and Barrel with gold filled clips.  Sold by Parker as the "Signet" and later renamed the "Insignia"  Available in both Full size and Demi size.  Unique design of 3 parallel lines spaced evenly.  Available with 'clicker" and Liquid Lead pencils. Less Common Cap