I don't know anything about the bike specifically, but I'm guessing it's a department store bike. My reason for thinking this is that the rear reflector was installed upside down, which means someone bought it in a box and assembled it themselves. I know, pretty weak logic. Did you post it in the folding bikes forum? If not, try it.
I did find out that this bike is a 1965, it has the original tan leather seat, ( i put a seat cover on it to protect it) the newer Amica's have a solid tube book rack instead of the danty chrome one that this bike has. The chain guard is also soild on the older Amica's. The newer ones have a partial top guard. That's about all I've found out.