Lee, thanks for confirming that it's similar to one you bought from Backroads.

When I bought the bike I figured it was a good deal even if I stripped everything off the frame and put the components on something else. A little more research has led me to believe the frame could be an early-80s Centurian, possibly a Pro Tour or a Comp model. The serial number format on the BB shell matches Centurians from that era and the lugs are the same. Not exactly a smoking gun, but helpful information as I decide whether to rebuild on the same frame when I tear the bike down to clean and lube everything. I'm just going to ride it for a week or so until I decide what to do. Having fun on it, though...