Id a Dutch Looking Pitcher (?)

Hi can anyone tell me what this is ?? I found at the local thrift store and I got 2 identical ones( which makes me question how old they really are)) I buy and sell at local flea market usually never glass or pottery,because for one thing it breaks, 2nd there are so many reporduction pieces out there ! and I do not want to be one selling that junk,,But anyway jug is not marked on bottom, except for a tiny X , that looks like it was just cut in with something,, Thanks MeganO