Local Destin Florida estate find. This is authentic. It comes with paperwork. The band is 2mm at the skinniest and 10.5mm at the thickest. I have several other pieces listed from the same estate so be sure to check out my other items as well. This is a pre-loved item but it is in overall wonderful condition. The measurements are in the pictures. OUR SHIPPING TIME IS PRESET TO 3 BUSINESS DAYS HOWEVER WE CAN EXPEDITE IT UPON REQUEST Please refer to pictures for accurate condition details, we will point out any & all flaws. Our items come from a pet free and smoke free environment