There is a lot of misinformation concerning the pedigree of the original Enterprise model kits. Most 'bay offerings proudly claim their kits are from the '60's run from AMT, misleading more informal collectors. All the '60's vintage Enterprise models are in 'long boxes,' most with a blue stripe down the left side and AMT's logo at the base of that stripe. If the box has the blue area at the top, it's a '70's retool.
Also, the '70's kits were issued in:
1975 (AMT - Kit part S951)
1979 (AMT - Lesney - Kit part S951)
1984 (AMT - Ertl - Kit part #6676)
1986 (AMT - Ertl - Kit part #6676 with 20th Anniversary logo)
So, which one am I selling here?! It's the '84 version. Here's a wonderful description of this particular, unique kit (the 'gray' Enterprise with 'smoked' domes):
"Small Box Version Three, Kit #6676
In the early 1980s, AMT was purchased by Ertl and the company moved to join Ertl’s operation at its location in Dyersville, Iowa. With the success of Star Trek in the movies and reruns on TV, demand for the classic Enterprise kit remained strong. The box art changed slightly, to reflect that the company was now AMT/Ertl and included a little different data on the side panels. Mold wise, the kit remained unchanged, but the plastic color changed to a light gray plastic and the clear parts were molded in a smoke clear white plastic. Decal artwork was the same, but the decals themselves changed slightly to using blue backing paper instead of tan paper and included separated carrier film for each image, while all previous sheets (long box versions included) were essentially one piece decals and required each image to be cut out completely before soaking to remove most of the carrier film."
- From: "A History of the AMT Enterprise Model" by Jay Chladek
The front of the box is a bit depressed along the upper middle along the "STAR TREK" logo. There is a small rip in the front lower right front plastic wrap, but otherwise it's in excellent shape after over 3 decades! It looks like it's just off the hobby shop shelf!