For this brand new limited edition, Omega didn't break the mold, but they certainly changed what went into it. Still 42mm wide and keeping steadfast to the overall theme of the BA145.022, the Speedmaster Apollo 11 50th Anniversary Limited Edition (reference 310.60.42.50.99.001) trades 18K yellow gold for a new Omega-exclusive 18k gold alloy that the brand is calling "Moonshine Gold." Forming the case, bracelet, and various other elements of the watch, this new alloy uses additional palladium to fight the discoloration that can occur in ordinary 18k yellow gold, and while more pale in color, it promises to retain more of its general character over time. Likewise, while the burgundy bezel is a direct nod to the bezel inset from the original, it is now rendered in ceramic with a scale printed in Omega's Ceragold. Notice not only the deep color, but also the vintage-Speedy nod of including a scale that extends to 500 units and dot over the 90 measure (a hallmark of pre-'70s Speedmaster bezel design).