Rolex GMT Master 40mm Ref 1675 1969 Watch

Q: What is the Rolex GMT‑Master Ref 1675 (1969)?
A: It’s an iconic, Swiss‑made travel watch featuring a 40mm stainless steel Oyster case, automatic movement, a 24‑hour GMT hand and a bidirectional rotating bezel. This example has its original folded stainless steel bracelet (clasp date coded 2nd quarter 1968), a mint condition matte Mark I “Long E” dial, and an attractively faded, period‑correct “oval‑top” fat‑font bezel insert.

Q: How does the GMT function work, and can I set the GMT hand independently on a 1675?
A: On the 1675 the 24‑hour hand is linked to the hour hand (it isn’t independently adjustable). To read a second time zone, set the watch to your home time, then rotate the bezel to the required hour offset; the 24‑hour hand reads against the bezel while the main hands show local time. You can read a third time zone temporarily by further rotating the bezel. Independent GMT hand setting was introduced later on GMT‑Master II models.

Q: How do I set the time and date on this vintage model?
A: Unscrew the crown anti‑clockwise. Position 1: wind the movement (about 20–40 turns if it has stopped). Position 2: set the time. The date advances by rolling the hands past midnight (the 1675 does not have a quickset date). Avoid changing the date between roughly 8pm and 2am. When finished, push the crown in and screw it down firmly to maintain water resistance.

Q: Is it water‑resistant and can I swim with it?
A: The Oyster case was originally rated to 100 metres, but water resistance on vintage watches cannot be guaranteed without recent servicing and pressure testing. We recommend avoiding swimming or showering unless the gaskets have been replaced and the watch tested by a qualified watchmaker. Always ensure the crown is fully screwed down before any exposure to moisture.

Q: Which movement does the 1675 use, and does it have hacking seconds?
A: Most 1675s house the automatic Rolex Calibre 1575 (GMT variant), renowned for robustness. Many examples from 1969 are non‑hacking (the seconds hand does not stop when the crown is pulled); hacking became more common from around 1971. We can confirm the exact behaviour on this watch on request. A routine service every 5–10 years is generally recommended.

Q: What crystal and bezel does this watch have?
A: The 1675 typically features an acrylic crystal with the Cyclops date magnifier. Acrylic can pick up fine marks but is easily polished; avoid abrasive cleaners and solvents. The bezel insert on this piece is an original “oval‑top” fat‑font style with attractive vintage fade. To preserve the colours, keep the watch away from prolonged UV exposure, chemicals and high heat.

Q: Will it fit my wrist, and can the bracelet be adjusted?
A: The bracelet is at approximately full length (around 22cm), suiting medium to larger wrists. We can size the bracelet prior to dispatch; additional links can often be sourced subject to availability and potential cost. The 1675 uses a 20mm lug width, so strap options are plentiful if you prefer leather or fabric.

Q: How can I verify the exact reference and year of production?
A: The reference number (1675) is stamped between the lugs at 12 o’clock and the serial number at 6 o’clock (bracelet removal is required). This watch’s serial 1902331 indicates production around 1968–1969, and the bracelet clasp code confirms 2nd quarter 1968. We’re happy to share detailed photos or verify these details for you.

Q: What is included, and do you guarantee authenticity?
A: Please check the Accessories section of the listing; this watch is delivered with Box and Outer Box. A Retro Tale professionally authenticates every item and provides a 12‑month mechanical guarantee, insured DHL delivery, and a 14‑day return policy.

Q: Any care tips for daily wear?
A: Keep the watch away from strong magnets, moisture and harsh chemicals; wipe with a soft microfibre cloth after use. Avoid heavy polishing to preserve crisp case lines and originality. If you notice significant timekeeping changes or condensation under the crystal, stop wearing the watch and contact us for advice.