This is the original Innova Roc. The small diameter "wings" roc was the fourth disc manufactured by Innova. A retool of the Aviar XD or later the XD the Roc was one of the most overstable discs of the early days. This disc is in excellent near mint condition with on some slight storage wear. This disc has a metallic blue hot-stamp and weighs 176 grams.
According to discgolfsweden:
The original Roc, a bit overstable for that time, a retooling of the XD, a small bead added. It was unique because it was the first try to put a bead on the rim in an attempt to stabilize the disc. The Roc along with Aviar are still today two of the most prized discs in the sport. Released in 1987 with the "Football"-stamp), got the "Wings" hotstamp early 1988, retooled into concave rim late 88 (Proto also had the "Wings" hotstamp), production run got Roc bird hot stamp early 89. Discs from between 92-94 had a higher top and were slightly less stable than the original