I have the original chainrings, though the small one is about halfway through its life. The TA are ten speed to have matched the rest of the drivetrain and thus needed to fit the narrower chain and different pickup/dropoff from the original 6 speed. The date code, EA, agrees they were not manufactured during the AX period and they are 70's. Also the pedal bearings are in very good shape and spin smoothly and the scrapes on the bottoms are cosmetic and not deep. The cages are size large which as far as I know is the largest they made and fits most better than the medium. Apples to apples I was really just looking for a ballpark figure as I got the cranks and new chainrings very cheaply. I have done a lot of research on most everything about the cranks and current uses for the pedal style, rather cool and very overpriced from Europe, but unfortunately that include a fair market value. Thanks for the help.

I did notice, looking on velobase for example, that the cranks appeared to be anodized the same way that my pedals are. I bought the cranks from and old racer in CA and have to wonder if is was part of a production run for sponsored athletes or promotion. I certainly hope you are wrong about the difference making them less valuable.