Seiko - Sportsmatic Calendar 820 - No reserve price - 15040 D - Men - 1963

Presented for auction by Second Vintage The Seiko Sportsmatic line represents a pivotal era in Japanese watchmaking, capturing the transition toward robust, reliable, and accessible automatic timepieces for the everyday wearer. Introduced in the early 1960s, the Sportsmatic series was designed to offer excellent performance and modern aesthetics, quickly becoming a staple on the wrists of working professionals. This Sportsmatic Calendar 820 embodies the clean, functional elegance of mid-century Seiko design, featuring a sharply defined case and a beautifully aged dial that speaks to decades of honest wear. It is a fantastic opportunity for collectors to acquire a foundational piece of Seiko's automatic history, brimming with vintage character. Brand: Seiko Model: Sportsmatic Calendar 820 Reference Number: 15040 D Serial Number: 3033498 Movement: Automatic, Caliber 820, 17 Jewels Dial: Silver sunburst dial with applied faceted indices, displaying visible age-consistent spotting and patina Case Size: 36 mm (excluding the crown) Case Material: Stainless Steel Production Year: 1963 Condition: Good vintage condition with honest wear and attractive dial character Dial and Hands The silver sunburst dial features a classic mid-century layout, adorned with applied, faceted rectangular indices that catch the light beautifully. The dial displays the printed "Seiko Sportsmatic Calendar 820" and "Diashock 17 Jewels" typography in crisp serif and sans-serif fonts. A framed date window is positioned at the three o'clock mark. Upon close inspection, the dial exhibits visible, age-consistent spotting and a fine layer of patina spread across the surface, particularly noticeable toward the center and edges. This honest aging adds a distinct vintage charm without compromising legibility. The polished dauphine hands remain well-preserved, complementing the applied dial furniture and completing the sharp, mid-century aesthetic. Case and Crystal The 36 mm stainless steel case is a testament to Seiko's enduring case design, featuring a smooth polished bezel and sharply angled lugs with well-defined chamfers. The case flanks and lug profiles retain their factory lines, showing normal, honest signs of wear, including superficial scratches and light handling marks consistent with its age. The recessed crown, neatly tucked away at the four o'clock position, maintains the sleek, uninterrupted silhouette of the case side. The watch is fitted with a domed acrylic crystal that presents clearly, offering a warm, distortion-free view of the dial beneath. The snap-on stainless steel caseback remains highly legible, clearly displaying the serial number 3033498 and reference 15040 D. Movement Powering this timepiece is the Seikosha automatic Caliber 820, a reliable 17-jewel movement equipped with Seiko's Diashock anti-shock system. The movement presents cleanly in the photographs, with the distinctive semi-circular rotor proudly stamped with "Seikosha" and "Sportsmatic 17 Jewels 820." The brushed finishes on the rotor and bridges remain distinct. Performing well within expected vintage tolerances; running strong and steady. Timegrapher results reflect a deviation of +20 to +23 seconds per day. Strap The watch is paired with a period-appropriate black leather strap featuring an embossed crocodile pattern and contrasting reddish-brown lining. The strap is secured with a standard polished stainless steel tang buckle, providing a comfortable and dressy complement to the silver dial and steel case. Condition This Seiko is presented in good vintage condition. The stainless steel case remains sharp and well-defined, exhibiting moderate, age-appropriate wear and handling marks. The dial is the standout feature regarding condition, displaying clear, visible spotting and an even patina that collectors of honest vintage watches often appreciate. The hands and applied markers retain their structural integrity and visual appeal. The acrylic crystal is clean, and the caseback engravings are crisp. Dimensions The stainless steel case measures 36 mm in diameter, excluding the recessed crown. The lug-to-lug distance and case thickness provide a balanced and comfortable presence, fitting elegantly on the wrist as a classic vintage dress watch. Remarks This Seiko Sportsmatic Calendar 820 is a charming example of 1960s Japanese horology. Its combination of a sharp case, a reliable Seikosha automatic movement, and a dial full of vintage character makes it an appealing choice for enthusiasts looking for an authentic, daily-wearable vintage piece. The recessed crown and clean dial layout are hallmark Seiko design traits that continue to be celebrated today. History Launched in the early 1960s, the Seiko Sportsmatic was created to bring high-quality automatic movements to a broader audience. It was designed to be a durable, water-resistant, and visually appealing watch for everyday use. The Sportsmatic line played a crucial role in popularizing self-winding watches in Japan and internationally, setting the stage for Seiko's dominance in the automatic watch market. The recessed crown at four o'clock was a deliberate design choice by Seiko to emphasize that the watch was automatic and did not require daily manual winding, a feature that became a signature of many iconic Seiko models in the decades to follow. / Second Vintage SKU: SEI-SSD-0065