Last night, my wife and I finished watching Peaky Blinders, another Netflix Original that deals with an Irish/Gypsy/Tinker gang trying to break into respectability in England after World War I. There's good character studies, and serious effort made towards giving the proper feel of the era. Pretty solid stuff. Worth a look.
They've had two seasons so far of six shows each; I don't know if it's been renewed, but there's certainly room for more. Very nice.