【Overview】 This watch is a masterpiece automatic chronograph "6138-8020," commonly known as the "Seiko Panda," manufactured by SEIKO, a Japanese watchmaker that the world is proud of, around the 1970s. This model is known as a legendary vintage watch that is indispensable in the history of Seiko chronographs and is still highly regarded by watch collectors around the world. The biggest feature is the "panda"-like two-tone dial design, with black two-counter (inner dial) on a silver main dial. This "panda dial" is very popular for its cute yet sharp appearance and boasts outstanding design among chronographs of the same era. Furthermore, this model adopts a vertical (12 o'clock and 6 o'clock direction) layout chronograph display, creating a well-balanced appearance that combines visibility and design. This "vertical chronograph" was an innovative design in mechanical watches of the 1970s and still attracts attention as a collector's piece. Due to this background, it is particularly highly valued among collectors, further increasing its rarity. This "Seiko Panda 6138-8020" is a supreme piece representing vintage SEIKO, combining the beauty of the panda dial, the appeal of the vertical chronograph, and the rarity of the Japanese calendar. 【Dimensions, etc.】 Case size: Diameter approx. 41mm (excluding the crown) Movement: 6138 (automatic winding) Era: Around the 1970s * The calendar is in English and Japanese, which are popular. * Chronograph function, inner bezel, day of the week switching, etc., have been checked for operation. * If the chronograph hand does not return completely when resetting, press the button several times. It will return to the 12 o'clock position. 【Condition】 There are signs of aging and use, but the condition is good. 【Functions】 Daily rate within 5 minutes (flat position) (In the case of vintage watches, a daily rate of about 5 minutes is standard) Measured on 2025/11/1 * Approximately ±20 seconds as measured by a timegrapher. Very good. Daily rate of about 1 minute in a flat position. 【Other】 As a vintage watch, it is impossible to know the full history of past repairs and parts replacements. There may be customized parts, such as aftermarket parts or parts from other Seiko watch models.