The Omega Speedmaster "Marui" Ref. 3510.21 is a rare and highly sought-after Japan-exclusive limited release of just under 2000 pieces, created in collaboration with the renowned Japanese department store Marui. What sets this model apart is its striking white dial contrasted with bold black subdials, giving it a crisp "reverse panda" look that’s both sporty and refined. Housed in a 39mm stainless steel case, it maintains the classic Speedmaster profile while offering a slightly more compact wear on the wrist. Powered by the reliable Omega automatic chronograph movement, it blends form and function seamlessly. This particular example is in excellent condition and comes as a full complete set with its original box, papers, and accessories — a true collector's piece for Speedmaster enthusiasts and fans of limited Japanese market editions.

The Omega Speedmaster "Marui" Ref. 3510.21 is considered important and collectible for several key reasons:

1. Japan-Only Limited Release

This reference was created exclusively for the Japanese department store Marui, making it a domestic market exclusive. Watches made specifically for a single market — especially Japan, which has a long history of unique collaborations — are often produced in very limited quantities, increasing their rarity and desirability.

2. Unique Dial Configuration

The "Marui" features a white dial with black subdials, which is a reverse of the traditional black dial/panda subdial look seen on most Speedmasters. This striking contrast gives it a fresh, clean aesthetic and makes it stand out among Speedmaster variations. It’s one of the very few Speedmasters to feature this dial configuration from the factory.

3. Ties to the Legendary Speedmaster Line

As part of the iconic Speedmaster family, the Marui retains the legacy and appeal of a watch famously associated with space exploration and NASA missions. While this model isn’t the same Moonwatch worn on Apollo missions, it carries the same DNA and brand significance — but with a quirky, collectible twist.

4. Automatic Movement + Compact Size

Unlike the traditional manual-wind Moonwatch, the Marui uses the Caliber 1143 automatic chronograph movement and comes in a 39mm case, making it more wearable for many collectors. It’s often considered a great entry point for collectors who want something both practical and unusual.

5. Full Set Collectibility

Finding this watch in excellent condition with a full set — box, papers, and original accessories — is increasingly difficult. The fact that this example comes as a full complete set enhances its collectibility and long-term value.

In short, the Speedmaster Marui is important because it combines rarity, regional exclusivity, unique design, and Speedmaster heritage, making it a sleeper hit among serious collectors.

Todays example comes to us in stunning excellent condition and as a full complete set with its original card dated 9/8/04, serial hang tag, purchase tag, boxes, wallet and booklets, a true collectors gem.

In addition to its full collector set and condition, this example comes to us fully linked with no stretch. It's certainly not often that we see this reference in this condition, accompanied by its full complete set available in the American market, or open market for that matter, and here it is!