VINTAGE SWIFT TRILYTE BINOCULARS 8 x ,24 MODEL # 815w CASE JAPAN RARE!. rare binocular. The 1993 Swift price list shown  includes an 8x24 Model 815 Trilyte that retailed for an amazing $375. Note that the other Trilytes wrre less than a third that price. The distinguishing feature seems to be that it's armored and waterproof.