Kurono Tokyo
Toki (時)
Ref. Toki
2018–present · 37mm · caliber NH35A base (Seiko/TMI): automatic, 21,600bph, 41h PR, 24j; Asaoka-regulated and timed; movement finished to standards above NH35 norm
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Entry-tier movement
Versatile size: fits most wrists (6–7.5 in / 15–19 cm)
37 mm case. The sweet spot for the broadest range of wrist sizes. Neither too dainty nor too bold.
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Authentication
Kurono is a micro-brand with limited production; secondary market fakes are rare but undisclosed damage on resale is common.
Known issues in the market
- Sellers offering pieces at premiums before resale channels are established for the brand.
- Dial damage from improper crown operation or case handling.
| Area | What to check | What is correct | Red flag |
|---|---|---|---|
| dial | Enamel or lacquer dial finish | Deep, even color with no surface inconsistency, clean applied indices, Kurono Tokyo signature text crisp and evenly spaced | Surface bubbling, uneven color depth, text that appears printed rather than applied |
| case | Case finishing on stainless steel | Mixed brushed and polished surfaces as specified for the reference, sharp case transitions, no tool marks on case sides | All-polished case (indicating buffing), scratches on crown or case sides consistent with improper service |
| caseback | Serial number and Kurono engravings | Production serial number engraved, Kurono Tokyo designation, movement reference present | Missing serial, stamped rather than engraved text, caseback that does not thread cleanly |
| movement | Movement specification | Movement specification matches stated reference; finishing consistent with a Japanese micro-brand using established ebauche | Movement that does not match stated specification, evidence of swap |
Common legitimate replacements
- Straps are commonly swapped to leather alternatives.
Expert resources: Kurono serial numbers can be verified with the brand directly. Given small production runs, contacting Kurono Tokyo with the serial is the most reliable authentication path.
Authentication guide
Last reviewed June 2026
Hajime Asaoka's Toki is a limited, numbered release on a modified NH35 base. Replica risk is low but rising. The lacquer dial and caseback serial are the primary checks.
Sources: Kurono Tokyo official registry.
