Authentic! Tiffany & Co Mark T-57 Stainless Steel 。This is an authentic Tiffany & Co. Mark Chronograph Back Slot Automatic Winding Watch in gray stainless steel. The timepiece features a chronograph dial with sub-dials, a tachymeter scale around the bezel, and a date display at the 3 o\'clock position. Brand: Tiffany & Co. Type: Automatic winding Category: Men\'s Color: Gray Silver Model: Mark T-57 Chronograph Back Skelton Country Of Origin: Switzerland Serial: 02024**** Size: Case: 42 mm (1.65 in) Specifications: Movement: Automatic winding Display type: Chronograph Carre type: Date display Dial color: Gray Material: Stainless steel Accessories: None Status: The entire Hardware part has scratches and marks due to use. As you can see in the photo. One side of the plate-like item that is inserted into the case at the base of the belt is missing. So it is wobbly. Please be careful. AUTHENTICITY GUARANTEE: All The Reluxe items are carefully authenticated by our team of experts. Our items are stored in climate-controlled warehouses - smoke-free/pet-free. This item has no offensive odors. Preloved vintage items may smell like their materials/storage. Accessories not listed in description are for presentation purposes only and not included.