1969 hard box issue. This kit was originally designed as a gas-powered flying model. However, Aurora discontinued the gas-powered line very shortly after introduction due to returns and liability issues. Since the mold investment was already made, Aurora marketed these kits as large-scale static models and they became known as "Screwdriver Kits" to collectors. For example, the 1/32 scale B-25 was issued in Gas U-Control and then static - but the P-51 may have only been issued in static.