I just had seamless, aluminium gutters installed last Fall. I live in SE Pennsylvania and paid $2.60 per foot for gutters with hidden-hangers and downspouts installed. I don't think (but then I'm not paid to think) if Bruce is quoting $1.60 installed. He could be but I would suspect if it is an installed-price, it is not with hidden hangers. I got quotes in the range of $1.93 - $2.35 for seamless gutters installed with standard hangers.
Copper is real nice looking on the much older homes such as yours. Best to ya.