I have several Willow chainrings for sale. Willow was the component line of Heron Bicycles, and Rivendell used to sell these chainrings.

$10 a chainring if you can pick up and pay cash.

I'm across the street from Horner Park on the northside.

More info and photos on my CL ad: http://chicago.craigslist.org/chc/bop/5226491643.html

Thanks!

David