TUDOR OYSTERDATE CHRONOGRAPH "BIG BLOCK" Reference: 94210. Serial number: 226257. Steel case. Light grey dial, featuring three black sub-dials (seconds, minute totaliser, hour totaliser). Self-winding mechanical movement (Valjoux 7750). Stainless steel Oyster bracelet with signed folding clasp. Plexiglass crystal. Circa 1988. Diameter: 39 mm. A stainless steel wristwatch with an automatic movement, by Tudor. Circa 1988. RC: Sold as is, with signs of wear and use. Movement in working order at the time of writing; a routine service is recommended; no warranty.