Up for sale is an Omega mainspring winder for the Cal. 8500. This mainspring winder is only available to Omega certified watchmakers. I bought some tools from a retired Omega certified watchmaker and he included this winder and a few others. He had purchased them direcrtly from Omega but never used them. He gave them to me still in the original bags coming from Omega. They look brand new, but may have slight storage wear. However, nothing signficant or notable. 

Please study the photos, as they are a key part of the description, and feel free to reach out with any questions or concerns. I am happy to take more photos upon request and answer question. As I wind down my eBay store and sell off some inventory, all my items are being offered as is with no returns, so please reach out if you have any concerns and ensure that this suits your needs. I really appreciate your purchase and support! Thank you for checking out my store!