Grand Seiko
Heritage Hand-Wind SBGW231
Ref. SBGW231
2017–present · 37.3mm · caliber 9S64
Recent comparable sales
Market value
Pending ingest
No comparable sales on file yet — the live comp ingest path ships when the data layer is wired (Q3). We don’t publish a fair-value range until real comps land.
In-house manufacture caliber
Not yet rated
Community + OSINT signals haven’t landed for this reference yet. We don’t publish a rating against zero signal — the number would mean nothing. Editorial body + caliber + market value still surface above; ratings appear once the signal corpus does.
