The Seiko 6138-8000, affectionately known as the “Baby Panda,” is among the rarer chronographs in Seiko’s vintage lineup. Introduced in 1971 and powered by the 23-jewel Caliber 6138B, this reference was produced for only a single year—exclusively for the Japanese domestic market under the 6138-800x family. Like its sibling, the 8001, the 8000 was offered with two dial variants: a black iridescent charcoal and a pearl white. The example presented here features the latter—a creamy, elegant dial that complements the watch’s balanced proportions. Slightly slimmer and lighter than the “Jumbo” 8001, the 8000 wears comfortably on smaller wrists while maintaining enough wrist presence. 

This particular piece, circa October '71 stands out as an unused, pristine example—originally discovered as old stock in a long-closed watch store in Japan’s Ibaraki Prefecture. Freshly serviced, it ranks among the finest surviving specimens of this highly collectible chronograph. 

Dial: Is mint with no notable wear under magnification. It has a beautiful and even "pearl" white color. Bezel insert: No notable wear. Hands: Are matching and their lume is stable. Case: Appears unpolished and near mint. Correct unsigned crown. Bracelet: Correct Seiko Railroad XAB321 with virtually no stretch. It will fit an approximate 7.5 inch wrist. Crystal: Clear. Accessories: NA The movement is running well on our timegrapher and comes with our 6-month mechanical warranty.

Year/era: 1971 Reference: 6138-8000 Serial: 10XXXX Dimensions: 39.5mm wide, 43mm lug to lug, 19mm lug width, 14mm thickness. Movement: Automatic caliber 6138B.