edes ▁ste aling ▁the ▁P all ad ium ") ▁are ▁ext ant . ▁This ▁is ▁confirmed ▁by ▁the ▁Cor ning ▁Museum ▁in ▁their ▁ 1 9 0 - page ▁study ▁of ▁the ▁v ase ▁– ▁see ▁above . ▁ ▁According ▁to ▁a ▁controvers ial ▁theory ▁by ▁Ros em arie ▁L ier ke , ▁the ▁v ase , ▁along ▁with ▁the ▁rest ▁of ▁Roman ▁came o ▁glass , ▁was ▁m ould ed ▁rather ▁than ▁cold - cut , ▁probably ▁using ▁white ▁glass ▁pow der ▁for ▁the ▁white ▁layer . ▁ ▁Jer ome ▁Eisen berg ▁has ▁argued ▁in ▁Min erva ▁that ▁the ▁v ase ▁was ▁produced ▁in ▁the ▁ 1 6 th ▁century ▁AD ▁and ▁not ▁anti qu ity , ▁because ▁the ▁icon ography ▁is ▁in co her ent , ▁but ▁this ▁theory ▁has ▁not ▁been ▁widely ▁accepted . ▁ ▁Red isc overy ▁and ▁proven ance ▁ ▁One ▁story ▁suggests ▁that ▁it ▁was ▁discovered ▁by ▁Fab riz io ▁L azz aro ▁in ▁what ▁was ▁then ▁thought ▁to ▁be ▁the ▁s arc oph ag us ▁of ▁the ▁Emperor ▁Alexander ▁Sever us ▁( d ied ▁ 2 3 5 ) ▁and ▁his ▁mother , ▁at ▁Monte ▁del ▁Gran o ▁near ▁Rome , ▁and ▁exc av ated ▁some ▁time ▁around ▁ 1 5 8 2 . ▁ ▁The ▁first ▁historical ▁reference ▁to ▁the ▁v ase ▁is ▁in ▁a ▁letter ▁of ▁ 1 6 0 1 ▁from ▁the ▁French ▁scholar ▁Nicolas ▁Claude ▁Fab ri ▁de ▁Pe ires c ▁to ▁the ▁painter ▁Peter ▁Paul ▁Rub ens , ▁where ▁it ▁is