Grade not disclosed by the source; the edge points at the grade-unknown execution.
Watch model
Grand Seiko SBGM257
no sourced photograph
No round has proven an image for this record. An image is written only where the brand’s own page ties the picture to the reference — by its structured data, or by the reference appearing literally in the asset URL. Position in a gallery is not proof, so where nothing proved the pairing nothing was stored.
Movement
Attributes
- Catalogue presence
- listed_current
Sources
- 1grand-seiko.comhttps://www.grand-seiko.com/us-en/collections/sbgm257gmanufacturertier 1retrieved 2026-08-282 facts on this page
- 2grand-seiko.comhttps://www.grand-seiko.com/us-en/collections/movement/mechanical/9s66manufacturertier 1retrieved 2026-08-281 fact on this page