▁perm its ▁one ▁to ▁pre jud ge ▁the ▁final ▁effect ▁... ▁it ▁attract s ▁the ▁crowd ' s ▁curiosity ; ▁it ▁is , ▁in ▁effect , ▁the ▁new ▁Op éra ▁seen ▁through ▁revers ed ▁opera ▁glass es ." ▁The ▁model ▁is ▁now ▁lost , ▁but ▁it ▁was ▁photograph ed ▁by ▁J . ▁B . ▁Don as ▁in ▁ 1 8 6 3 . ▁ ▁The ▁em peror ' s ▁quadr ig ae ▁were ▁never ▁added , ▁although ▁they ▁can ▁be ▁seen ▁in ▁the ▁model . ▁Instead ▁Charles - Al phon se ▁G um é ry ' s ▁g ild ed ▁bronze ▁sculpt ural ▁groups ▁Harm ony ▁and ▁Po etry ▁were ▁installed ▁in ▁ 1 8 6 9 . ▁ ▁The ▁linear ▁fr ie ze ▁seen ▁in ▁the ▁model ▁was ▁also ▁red es igned ▁with ▁altern ating ▁low - ▁and ▁high - rel ief ▁decor ative ▁med all ions ▁bearing ▁the ▁g ild ed ▁letters ▁from ▁the ▁imperial ▁mon ogram ▁(" N " ▁for ▁Nap ol éon , ▁" E " ▁for ▁Emp ere ur ). ▁The ▁custom - des igned ▁letters ▁were ▁not ▁ready ▁in ▁time ▁for ▁the ▁un ve iling ▁and ▁were ▁replaced ▁with ▁commer cially ▁available ▁subst it utes . ▁After ▁the ▁fall ▁of ▁the ▁emp ire ▁in ▁ 1 8 7 0 , ▁G arn ier ▁was ▁rel ieved ▁to ▁be ▁able ▁to ▁remove ▁them ▁from ▁the ▁med all ions . ▁Let ters ▁in ▁G arn ier ' s ▁original ▁design ▁were ▁finally ▁installed ▁during ▁the ▁rest oration ▁of ▁the