I purchased a nice Schwinn Traveler at a second hand store. It is a ten speed from 1979ish based on the instruction manual that was still attached to it. the tires are original and not worn, and everything seems new. I'm guessing it spent the last quarter century sitting unused in a garage. It was a heaping $20 and is a really cool red. It is even my size, which can be hard for me to find used as I am 5'8" which seems to be a popular size for frames.

My problem is that it is a female style step through frame. I don't have any real issues with it (obviously, I'd prefer a male frame), but is there any structural/etiquette concern in my riding this style frame (I weigh around 200lb)?

It is like looking at NOS. A really nice bike.