It's a modded 3570 to look exactly like the Mitsukoshi Speedmaster, which is a 300-piece ltd edition launched in Japan in 2003 exclusively for their Mitsukoshi department store. However, Omega made some spare dials which were released to the public. The dials are now quite rare and pricey (1.1k SGD) I believe.
Mine is converted from the 3570 with the Mitsukoshi dial and silver hands which are true to the original. Some people use the original white subdial hands to increase legibility but I don't see a problem with that. The reason I used silver hands is to stay true to the original. Side by side with an original Mitsukoshi, mine looks exactly the same. Even the caseback. The only difference would be the warranty card, as the address is not Mitsukoshi department store.
I purchased mine fully converted from Carousell. I was damn lucky as I fell in love with it at first sight, and just nice someone was selling it locally. The seller even went out to source for a 2003 Speedy as it's the same year that the Mitsukoshi was released. You can buy a standard Moonwatch now and purchase the hands/dial from eBay if you want and convert it by bringing it to a watchmaker.