▁rounded ▁cont ours , ▁straight ▁up ▁wind sh ield ▁pill ars ▁and ▁sedan ▁rear ▁quarter ▁windows . ▁Series ▁ 5 0 ▁Super ▁and ▁ 7 0 ▁Road master ▁head l amp ▁bez els ▁also ▁hous ed ▁par king ▁lights . ▁Inside , ▁a ▁new ▁Red ▁Lin er ▁speed ometer ▁lay ▁hor izont ally ▁across ▁the ▁instrument ▁panel . ▁Inter iors ▁were ▁trim med ▁in ▁n yl on / C ord ave en ▁combinations , ▁except ▁for ▁the ▁convert ible ▁which ▁featured ▁le ather ▁seats . ▁Standard ▁Super ▁equipment ▁included ▁trip ▁mile age ▁indicator , ▁electric ▁clock ▁and , ▁on ▁convert ibles , ▁a ▁power ▁horizontal ▁seat ▁adjust er . ▁Super ▁sales ▁rose ▁to ▁ 1 3 2 , 4 6 3 . ▁ ▁In ▁ 1 9 5 6 ▁although ▁the ▁Super ▁was ▁larger ▁Bu ick , ▁with ▁vertical ▁wind sh ield ▁posts ▁and ▁four ▁V enti Port s ▁per ▁f ender , ▁it ▁had ▁a ▁deep ▁S we eps pe ar ▁similar ▁to ▁the ▁smaller ▁Series ▁ 4 0 ▁Special ▁and ▁Series ▁ 6 0 ▁Century ▁cars . ▁Series ▁script ▁was ▁found ▁on ▁rear ▁qu arters ▁and ▁within ▁the ▁deck ▁and ▁gr ille ▁em blem s . ▁Inter iors ▁were ▁Cord ave en ▁and ▁pattern ed ▁n yl on , ▁except ▁for ▁convert ibles ▁which ▁were ▁all - C ord ave en ▁trim med ▁and ▁had ▁power ▁windows , ▁horizontal ▁seat ▁adjust ment ( S ix - way ▁power ▁seats ▁were ▁optional ), ▁and ▁a ▁power ▁top ▁in ▁its ▁standard ▁form .