Thanks for the comments everyone! I know it's not the most high-end bike in the world, but I have to admit I almost like it too much to make it my rainy day commuter. I rode it to work today to show a coworker who is interested in cycling and received compliments from several others about how great it looks for the age.
I did a little research online before I purchased it and learned a lot on the Gitaneusa site, especially old posts from verktyg. Most of the information I found was about the interclub with the honeycomb dropouts, not the lowly stamped ones like mine. I took a few more pics for posterity before my bike gets less photogenic.
head lugs with 72 stamped on top lug
rear drop out non drive
drive side with Suntour V rear derailleur
head tube with BCM stamped on lugs
I'm still infatuated with it, so I'll probably spoil it for a while and keep riding my Surly to work (it is supposed to rain/snow for the next 3 days). I willing to give the half step gearing a chance, and I don't plan on replacing the cottered crank, maybe just a switch the smaller chain ring from a 45 to 42.
...just one other thing. Which is older in that first pic? That bike? Or the Plymouth?
The Plymouth is older.