The finish of an archival pen tells an immediate story about its origin. Authentic colored barrels rely on industrial multi-layer lacquer baked over a substantial brass barrel core. A genuine Tiffany blue lacquer finish possesses depth, displaying a high-gloss, glass-like reflection without orange-peel texturing, bubbles, or cloudy undercoats. Counterfeits routinely cut corners here, using quick-drying powder coats or brittle polyurethane paints that chip around the barrel threads within weeks of handling.
On metallic models, the material standard was uncompromising: Tiffany and Co sterling silver dominated the inventory. Authentic pieces exhibit a unmistakable warmth, heft, and subtle patination over decades. Look for micro-stamped markings along the cap band or clip base. A genuine piece displays a sharp, indented "Tiffany & Co. 925" or "T&Co. 925 Sterling" mark, struck with a physical die rather than shallow, burned-on surface laser etching. If the silver feels unusually light, a full-sized vintage sterling pen should weigh between 24 and 38 grams depending on OEM configuration, it is likely silver-plated brass.
