Vintage Tiffany & Company T-clip Pen Set is in beautiful vintage condition. This set (of two pens) is authentic Tiffany and Company and is marked as such. The pens are also marked Sterling. These Pens sat in a box unused for 30 years during which time a deep patina developed. This patina is darker on on side of each pen because they sat untouched for such a long period of time. The original Tiffany box is in perfect condition and is included in the sale of the Pens.