Seiko Japan 310.110 Balance Wheel Genuine Unused Old Stock

Seiko Japan 310.020 Balance Wheel Genuine Unused Old Stock. This item has been tucked away for many years in a cabinet. These vintage spares have not been used and are sold without warranty. All sales are final with no returns unless the wrong item has been sent or the item is incorrectly described. Please ask any questions before purchasing and I will try to answer them. Please view images.