It is the special edition (limited, not numbered) that Omega did for the Japanese market in 2004. Inspired by the vintage racing dials, Omega produced only 2004 of these watches. These watches regularly pop-up on Chrono24 or eBay for example, priced between €4000 and €5000 Euro, depending on condition.
Omega Speedmaster Racing 2004 Japan Watch
This 2004 version of the Omega Speedmaster Racing replica watches comes close to the Speedmaster Racing 145.022-68 with its grey dial and orange Ω logo. Of course, in 2004 Omega equipped their hand-wound Speedmaster watches with the caliber 1861 for quite some years (since 1997) already. The original 145.022-68 of course has the caliber 861 movement, the ancestor of the caliber 1861.

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