I don`t think its a repro but I don`t think its that old either !! More likely around mid century !! As for the verdigris,, for an alloy that is mainly copper,, that is what I would expect to see to an extent but some bronze just gets darker mahogany color !! A lot depend on the blend of metals !! What bothers me about this piece is that what I see looks yellow in the scrapes which to me would indicate brass,, a metal that is common all over that area !! On a bronze item you would not be able to chip at it with the fingernail,, a surface application you possibly could depending on how it was done !! Did it flake off ??