There are three Moonwatches (of which none is really a Moonwatch, but that's another story) and all three are replicated in some manner or other.
There's the 42mm Seagull closed caseback flat front version, the 42mm Seagull display back domed hesselite Holy Grail and there's the 40mm reduced Asian 7750 version.
I don't know if accurate versions of any of them are currently available. The one everyone wants is pictured below (from my personal collection of course):