Measuring 40mm with a 41mm lug to lug and 13mm thickness, this Ref. 6138-8020 wears with a very balanced stance on the wrist substantial enough to feel sporty, yet compact enough to remain highly comfortable for daily use. Inside beats the automatic Calibre 6138B, one of Seiko’s respected vintage chronograph movements. Preserved in all original condition and offered fully serviced, this piece remains a strong choice for anyone looking for an honest and highly wearable vintage panda chronograph from one of Seiko’s most collectible eras. Specifications Brand: Seiko Model: Chronograph Automatic Panda Reference: 6138-8020 Movement: Automatic, Calibre 6138B Dial: Panda Dial Case Material: Stainless Steel Case Size: 40mm Lug to Lug: 42mm Lug Width: 19mm Thickness: 13mm Condition: All Original
The golden era of Seiko chronographs produced some of the brand’s most memorable and collectible designs, and Ref. 6138-8020 stands as one of the most appealing examples from that period. With its balanced proportions, practical layout, and unmistakable sporty character, this reference captures the charm of vintage Seiko at a time when the brand was confidently shaping its own identity in automatic chronograph watchmaking. What makes this example especially attractive is its classic panda dial configuration, pairing a clean white main dial with contrasting dark sub registers that give the watch both depth and strong visual presence. The tachymeter scale, day-date display, and sharp handset all contribute to a design that feels functional and purposeful, while still carrying the unmistakable vintage warmth collectors continue to appreciate. It is the kind of dial that feels instantly recognizable, yet never loses its charm.
