8.25x11x3" deep sealed box contains ©1970 set. This Hot Wheels spin-off features die cast metal and plastic planes for which Mattel produced 6 different (all shown on back of box) along w/several accessories. However, the line was discontinued after just 1 year due to lack of sales making all items for the Sky Birds line scarce. This set includes 1 plane, flight deck w/astrozoom sound, 30 feet of skyline, coil clamp, 2 skyline hooks and instructions. Planes in this series were "Sky Scraper, Ski Gull, Maching Bird, Regal Eagle, Cloud Hopper, Star Gazer" although as sealed, we are unsure what plane is in this box. Top of box has inked store prices at top center, scattered edge wear. Box still sealed and Fine w/Mint contents. Rare as sealed.