I got a DA track crank, octalink with BB and a Vuelta 49 tooth ring, all in great shape for $160 on CL. The DA words were a bit worn from straps. So your deal is not a deal at all.
BTW I put it on a '88 Schwinn Premis that has track ends on it. That Columbus Tenax tubing.
I love the bike and the crank.
I got it since it was a good deal and will put it on a BK frame next month.