studio portrait of the 42mm Omega Seamaster Diver 300M 75th Anniversary Summer Blue watch featuring its gradient wave dial and scalloped blue ceramic bezel resting on a navy blue background

Rear studio view of the 75th anniversary Omega Seamaster case showing the solid steel caseback beautifully engraved with Poseidon and seahorses

angled studio close-up of the closed stainless steel push-button folding deployant clasp on an Omega Seamaster bracelet over a navy blue backdrop

flat top-down view of the internal folding clasp blades and the integrated diver extension mechanism of a steel Omega bracelet open over a navy background

official white Omega card holder displaying three red credit-card style warranty, pictograms, and master chronometer cards flat-laid on a light studio background

official rectangular cream-colored Omega plastic hangtag with gold string displayed flat on a white studio backdrop

iconic thick red Omega official user operating instructions manual and service documentation booklet resting flat in a studio layout

special 75th anniversary Omega Seamaster watch displayed upright inside its open premium light wood presentation box alongside its leather card holder

Omega Seamaster Diver 300m 75th Anniversary 210.30.42.20.03.003

Name: Omega Seamaster Diver 300m 75th Anniversary 210.30.42.20.03.003
Brand: Omega
SKU: 12543
Price: 5175.00 USD
Availability: InStock

$5,175.00

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Collector's Notes

The gradient "Summer Blue" dial immediately sets this 42mm steel Omega watch apart from standard production models. Framed by a blue ceramic diving bezel, the wave-patterned surface features light blue luminous markers for clear visibility. The internal Calibre 8800 automatic movement ensures a 55-hour power reserve behind a stamped, commemorative steel caseback. For the enthusiast seeking a Seamaster Diver with explicit historical ties, the 75th anniversary edition 210.30.42.20.03.003 checks every box on the list.

Specifications

Brand: Omega
Model: Seamaster Diver 300M 'Summer Blue' 75th Anniversary
Reference: 210.30.42.20.03.003
Case Material: Steel
Bracelet Material: Steel
Size: 42mm
Dial Color: Blue
Bezel Material: Ceramic
Date: 2025
Condition: Pre-Owned
Included Items: Watch with original box and papers
Movement: Automatic
Crystal: Sapphire Crystal
Water Resistance: 30 ATM

Stock ID: 12543

Shipping & Delivery

At Grand Caliber, we strive to provide a seamless shopping experience with secure, fast shipping. All watches are in stock and typically ship within one business day after payment verification. We offer free domestic shipping via FedEx Overnight, fully insured at no extra cost. Orders are shipped to the nearest FedEx shipping center for secure pickup. Orders paid by credit card will be shipped only after the transaction is approved and settled, typically by 8:00 pm CT. Orders placed before 12:00 pm CT will ship the next business day, while those placed after 12:00 pm CT will ship on the second business day. To protect our customers, all orders must be shipped to the billing address on file with the credit card company unless an alternate shipping address is verified in advance. Orders paid via wire transfer will ship the same day funds are confirmed, with a cutoff time of 1:00 pm CT. We only accept wire transfers—no ACH or other electronic transfers.

Grand Caliber exclusively ships through FedEx and does not accommodate alternative shipping methods. FedEx Overnight shipping applies to all U.S. orders and delivers Monday through Friday; no weekend or holiday deliveries are available. A valid street address is required, as FedEx does not ship to P.O. boxes, APO/FPO addresses, or U.S. Territories. Sales tax is collected where applicable. If sales tax is not charged at checkout, customers may still be responsible for use tax based on their state’s regulations. We encourage customers to check with local tax authorities for specific guidelines. This tax notice is for informational purposes only and does not constitute legal or financial advice. Please consult a tax professional for guidance.