Too few priced listings for a median
| Listing | Posted | Condition | Authenticity | Price ↑ | ||
|---|---|---|---|---|---|---|
 | WatchRecon | 8/13/2026 | — | Unknown | $2,300 | View on WatchRecon |
We currently track 1 listing for the Seiko Prospex MM300 140th Anniversary Green – SBDX043 / SLA047 – Mark of the Beast, with prices ranging from $2,300, from WatchRecon.
The Seiko Prospex MM300 140th Anniversary Green – SBDX043 / SLA047, also known as the "Mark of the Beast," is a remarkable timepiece that celebrates Seiko's rich heritage in dive watch craftsmanship. This model features a striking green dial that evokes the depths of the ocean, complemented by luminous hands and markers for optimal visibility in low-light conditions. Crafted from stainless steel, the watch boasts a robust 44mm case with a unidirectional rotating bezel, ensuring durability and functionality for professional divers. The sapphire crystal is treated with anti-reflective coating, enhancing clarity and scratch resistance. A standout feature is its impressive water resistance of up to 300 meters, making it suitable for serious underwater exploration. Part of Seiko's Prospex collection, the MM300 is renowned for its precision and reliability, powered by the automatic Caliber 8L35 movement, which offers a 50-hour power reserve. This watch runs true to size and is designed for comfort on the wrist, making it an ideal choice for both diving enthusiasts and collectors alike. The Seiko Prospex MM300 reflects the brand's commitment to innovation and quality, cementing its status as a must-have for any serious horology aficionado.
The Seiko Prospex MM300 140th Anniversary Green – SBDX043 / SLA047 – Mark of the Beast is a pre-owned Seiko watch available for purchase across multiple resale platforms. Shop 1 active listing with prices ranging from $2,300. Find this item on WatchRecon.
Current market prices by condition and authenticity, based on active listings.
| Status | Listings | Price range |
|---|---|---|
| UnknownListings where authentication status is not specified | 1 | $2,300avg $2,300 |
| Marketplace | Listings | Total value |
|---|---|---|
| WatchRecon | 1 | $2.3K |
| Total | 1 | $2.3K |
Listing counts in the condition and platform tables are filtered subsets (listings with a known condition or price). The “active listings” figure at the top of the page reflects all tracked active listings and may be higher.
