Originally it was offered as a fountainpen/ballpen duo, often in a box, with two ink cartridges. There were two models, the Special CT and the GT. The Special CT had molded plastic barrels and stainless steel caps and nibs. It had chrome trim (CT) and came in the solid colours of black, blue and red. There was also a flighter (all steel) CT model offered. The Flighter fountain pens sported a nickel plated connector and the plastic CT fountain pens had a nickel plated barrel band. The clip was a derivate from Parker's other best seller school pen, the Parker "45". NIb sizes offered was extra fine, fine, medium and broad.

he GT was a model that had a matte epoxy resin coated stainless stell cap with 23k gold plated trim (GT) and nib. The GT became very popular since it had the look and feel of a much more expensive pen.
The "true" Parker "15" ball pens had the same square flat top as the fountain pens and was cap actuated (as opposed to the button actuated Jotter ball pens).

The Jotter 15's has been offered in a wide range of colours and designs, including "demonstrator" versions with clear plastic sections, and bright colours like Lime yellow, Energy blue, Cadet Blue, Burgundy, Pink. White and Orange. Read more under Jotter.

The range was manufactured in the UK.

The complete "true Parker 15" range:

     Parker CT in black
     Parker CT in blue
     Parker CT in red
     Parker CT Flighter
     Parker GT in Matte black

Parker "15" CT fountainpens Flighter and red, ballpens in blue and black, 1989.
Note the flat top on the ball pens, the Jotter ball pens sports buttons.