Extremely rare, hand-wound, silver, SILVER 900 Antique, vintage, antique item According to Google Lens, it is highly likely to be a pocket watch from Breitling, a high-end Swiss watch brand, but I'm not entirely sure. I believe it was manufactured in the early 1900s. Stamped with 0-900 Stamped with RF - what could this be? Stamped with something - a lion? Wings? Serial number 15522 Below that, the number 6 Operation unconfirmed, needs maintenance Everything in the images is included with the item. Please check the condition as well. Since this is a used item, please refrain from bidding if you are concerned about minor scratches. No claims, no returns. Thank you for your understanding. Please consider this item if you are able to perform maintenance yourself. Please judge the exterior condition from the images. Everything in the images is included. I myself do not have much knowledge, so I would appreciate it if you could judge and consider based on the images. This is a personal item, being sold by an individual, so I will not be able to respond to any claims or returns after arrival. However, if anyone is looking for this item, please consider it.