Parker Duofold Black GT Ballpoint Pen 1. Model Overview The Parker Duofold Black GT (Gold Trim) ballpoint is part of Parker’s flagship Duofold collection, known for its classic design, high-quality materials, and strong collector interest. It is typically produced in high-gloss black acrylic/resin with 23k or 18k gold-plated trim, depending on year of manufacture. 2. Design & Features Solid, weighty construction typical of the Duofold line. Twist-mechanism ballpoint. Large arrow clip in gold trim. Uses Parker-style ballpoint refills (QuinkFlow or Parker standard). 3. Market & Collectability The Black GT is considered one of the most traditional and durable Duofold variants. In the secondary market, condition (mint, boxed, documented) greatly affects value; prices typically range from €120–€250, with pristine/boxed pieces sometimes higher.