Powder blue Seattle Mariners trident v-neck pullover jersey by Ebbets Field Flannels. A couple reasons why this interests me, one, it's a style the Seattle Mariners never wore. It's not even a reproduction of the powder blue jersey that was seen during the Mariners' first spring training in 1977. Second, it was made by Ebbets Field Flannels. Even though they supplied uniforms for a 1997 Turn Back the Clock game between the Royals and Mariners that were supposed to be from 1977, Ebbets Field Flannels isn't associated with the double-knit polyester era. They mainly focus on replica flannel jerseys from the 1930s to the 1960s. A Seattle Mariners fauxback jersey, if you will, not a throwback.