The Seikomatic Ref. 15007D is one of Seiko's early models, marking the beginning of its global recognition for its Japanese mechanical watchmaking. Serial number N011836 clearly indicates the watch's production date as 1960. This model represents Seiko's more refined and characterful engineering period before it expanded its mass production volume.
The stainless steel case reflects the classic 1960s aesthetic with its soft and balanced lines. Its slim proportions give it an extremely elegant look on the wrist. The case shape and lug transitions are a clear example of Seiko's simple yet technical design approach during this early period.
The most striking element of the watch is its special dial with natural patina marks. The subtle circular textures extending from the center outwards, combined with the homogeneous patina formed over time, give the dial a unique character. This patina is not artificial or manipulated; it is the result of natural aging and strongly emphasizes the watch's vintage identity. As clearly seen in the close-up photos, the dial has an extremely impressive and collectible appearance.
At the heart of the watch is the Seiko Cal. 603, one of Seiko's first-generation automatic movements. This 17-jewel movement with Diashock shock protection represents one of Seiko's most important technical steps in its transition to modern mechanical watchmaking. The movement is in pristine condition and operates reliably. The fact that the watch is unused (NOS) is an extremely rare and special detail for a 1960 Seikomatic.
The Seikomatic 15007D is a significant reference representing the pre-Grand Seiko era, the purest form of Seiko's mechanical character, and the rise of Japanese watchmaking. With its patinated dial, early production movement, and preserved condition, it is more than just a watch; it is a document of its time.
Key Features
1960 Seikomatic
Natural patina, characterful dial
Classic stainless steel case
Seiko Cal. 603 automatic movement
Diashock – 17 Jewels
Never used (NOS) condition
Final Assessment
The Seikomatic Ref. 15007D is a highly special vintage model from Seiko's pre-Grand Seiko era, reflecting pure engineering. Its natural patina, first-generation automatic movement, and rare preserved condition make it a strong and meaningful point of reference not only for Seiko collectors but also for true vintage watch enthusiasts.
The item you are viewing was manufactured in 1960.
It has been professionally and completely refurbished (movement completely disassembled, parts cleaned, lubricated and adjusted) and your watch will function flawlessly without any surprises. (Requires no maintenance for 3 years unless directly exposed to water or prolonged high humidity.)
Product Condition: Tested, fully functional and in working order.
