My shop only sells genuine products, so please feel free to purchase. We also have a large inventory of excellent vintage and antique watches → #nekoneko Please read the profile before purchasing. ● Product Description [Overhauled in February 2026, New Windshield Replacement] This is a Seiko "ACTUS SS" from the 1970s, which was very popular at the time. "SS" stands for Second Setting, indicating that it is a higher-end model in the ACTUS series at the time, equipped with a hacking function (seconds hand stop). This watch is a 1976 model. Its most distinctive feature is the deep blue gradient dial with embossed patterns reminiscent of Japanese paper. The design, which changes its appearance like a jewel depending on the angle of light, is a unique presence that is not found in current products, typical of Seiko at the time. Upon listing, an overhaul was performed in February 2026. Furthermore, the windshield has been replaced with a new one, and it has been finished in a condition that combines practicality with the original brilliance. ● Detailed Information ・ Model Name: SEIKO ACTUS SS ・ Model Number: 6306-8030 ・ Case Material: Stainless Steel ・ Dial Color: Blue Gradient ・ Made in: Japan ・ Year of Manufacture: 1976 ・ Movement: Cal.6306 (Automatic, 21 jewels, with hacking function) ● Size Case Width: Approximately 36mm (excluding the crown) Lug Width: Approximately 18mm (Please forgive any slight errors) ● Features ・ SS (Second Setting) function: Equipped with a hacking function that stops the second hand when the crown is pulled. ・ A heavy cushion case with the edges of the time period still intact. ● Condition of the product ・ Overhauled in February 2026: Timegrapher measurement is about -10 seconds on a flat surface, which is good. (Varies depending on posture and winding condition) ・ Windshield: Replaced with a new one, and visibility is exceptionally clear. ・ Exterior: Although there are fine scratches and small marks due to aging, as it is a vintage item from about 50 years ago, there are no major dents, and the luster is beautiful. ・ Belt: A black leather belt from another company is attached. ● There may be scratches and stains that cannot be fully captured in the photos. Please consider after referring to the description and photos. ● Shipping will be done as quickly and carefully as possible.