Gold hand-wound watch. It says 14K GOLD FILLED. I tried winding the spring, but it doesn't seem to be working. Please consider this a junk item. This is a 14k Seiko 15JEWELS Nivaflex, an antique hand-wound watch from Seiko (Seikosha) of Japan, mainly manufactured in the 1950s (late Showa 20s to early 30s). It has significant historical value and is a feature often seen in the highest-end lines of the time and commemorative models of Seikosha. The main features are as follows: 1. 14K (Gold Filled) 14-karat gold is used for the case. It is likely to be "Gold Filled," which was common for high-end items at the time, or 14KGF (14k Gold Filled), which refers to a thick gold layer on the case. It is thicker than current plating, so although there is aging, it has a unique style. 2. 15JEWEL (15 jewels) The movement, the heart of the watch, has 15 jewels (such as artificial rubies) to reduce wear. This is a specification often seen in the 1950s "Super" and "Unique" three-hand (center second) models. 3. Nivaflex (Nivaflex) If "Nivaflex" is written on the dial or the movement, it is proof that it uses a mainspring (hairspring) made of a special alloy that does not break. This technology began to be written on the dial around 1957 and was a status symbol of high-precision, high-quality watches at the time. Please understand that this is a very old item and has been stored at a private home by an amateur. - Model: Hand-wound watch - Band Material: Metal - Case Shape: Rectangular - Dial Color: Gold - Band Color: Gold Thank you for viewing.