▁the ▁state . ▁In ▁the ▁ 1 9 5 0 s , ▁a ▁ 4 ▁four - story ▁an nex ▁was ▁added ▁on ▁its ▁south ▁side . ▁West ▁was ▁built ▁next ▁in ▁ 1 9 5 8 ▁with ▁four ▁stories ▁with ▁ 2 ▁more ▁added ▁in ▁ 1 9 6 5 . ▁The ▁North ▁Building ▁was ▁the ▁final ▁building ▁build ▁in ▁ 1 9 7 4 ▁as ▁a ▁ 1 0 - story ▁building . ▁ ▁On ▁June ▁ 1 3 , ▁ 2 0 1 3 , ▁the ▁building ▁was ▁given ▁a ▁new ▁First Mer it ▁Bank ▁sign ▁along ▁with ▁reve aling ▁the ▁new ▁design ▁of ▁the ▁We ather ball . ▁In ▁October ▁ 2 0 1 5 , ▁the ▁University ▁of ▁Michigan – Fl int ▁announced ▁a ▁purchase ▁agreement ▁for ▁$ 6 ▁million ▁the ▁North ▁tower ▁of ▁the ▁building ▁to ▁be ▁completed ▁by ▁March ▁ 3 1 . ▁The ▁week ▁of ▁April ▁ 2 5 ▁ 2 0 1 8 , ▁the ▁" FM " ▁letters ▁were ▁removed ▁for ▁the ▁current ▁own ers ▁of ▁the ▁bank ▁building , ▁Hun ting ton ▁Bank , ▁which ▁purchase ▁First ▁Mer it . ▁ ▁We ather ball ▁ ▁The ▁symbol ▁of ▁the ▁bank ▁is ▁the ▁weather ball ▁located ▁at op ▁its ▁headquarters ▁in ▁dow nt own ▁Fl int ▁and ▁was ▁built ▁in ▁ 1 9 5 6 . ▁Currently ▁it ▁is ▁letter ed ▁for ▁Hun ting ton ▁Bank . ▁ ▁The ▁We ather ▁Ball ▁on ▁the ▁bank ▁headquarters ▁was ▁first ▁ill umin ated ▁August ▁