in both pictures - SS Dual Time Maserati. It was made in 900 pieces, and has the silver dial with brown calf strap. AP also produced 450 in RG (black dial, silver subdials) and a 90 in PT (cream dial with blue hands and markings). The watch came out in 2005/2006 and was produced in conjunction with Maserati's 90th Anniversary.
I'm a big fan of the piece. The dial is one of the most unique I have ever seen, with multiple layers sloping towards the center of the watch. While the case is listed at 47mm x 42mm, it is quite comfortable and does not appear too large. The oval shape is the perfect canvas for this sort of watch. You'll need to keep an eye on the secondary market to find it.