Thank you for viewing. This is a rare vintage model, a Seiko 5 automatic wristwatch by SEIKO. It is a 5139-8000, reminiscent of the 1960s-70s. Although this model is now difficult to obtain, it is in very good condition. 【Maintenance】 Cleaning: Alcohol disinfection completed Polishing: The exterior has been carefully polished, and the case has a mirror-like shine. Operation check: Although it is a mechanical (automatic) model, it is currently running smoothly. Calendar: The quick-set function for date and day of the week also works correctly. 【Condition of the item】 Appearance: Polished, so it is generally shiny and in beautiful condition. Please check the details in the images. Windshield (glass): There are no major scratches that impair visibility, and it is in beautiful condition. Overall: As a vintage item, there are minor scratches associated with use. Recommended for those who enjoy the texture of an antique. 【Detailed Information】 Model number: 5139-8000 Wrist size: Approximately 15cm Brand: Seiko (SEIKO) Series: Seiko 5 (Seiko 5) Driving system: Automatic 【Reliable Transactions & Other】 Authenticity Guarantee: We guarantee that this is a genuine product. If it is found to be a counterfeit or fake, we will accept returns and refunds. Price negotiation: We also accept price negotiations. Please feel free to comment. Welcome international buyers: We also welcome purchases from overseas through proxy services such as Buyee. If you are looking for a rare vintage Seiko, don't miss this opportunity. Thank you.