A little more research completed... I believe the bass Doc Green purchased was the 1980 4 string, S2. The one in these videos is a 5, and the videos were filmed in 1977. Kevin’s son (Elijah) is a bass player, but I only see photos oh him with a Gibson. There is a post from Kevin himself, when his son was selling the 4. So I wonder if Kevin sold the 5 when he bought the 4... or what happened to it. It looks like it has been awhile since the Doc was active here. If anyone has any info, it would be fun to know. Thanks