Hi all. My first post here. About 25 years ago I traded a tele for this SG - I've always preferred Gibsons (and my first electric was a '66 SG-style Les Paul Jr). Now I'm digging into the weeds (again) trying to figure out exactly what year it is. I've always thought 1970 - 72. The serial # is 923181. Based on other posts, I'm thinking 1970, but there are many folks here who know more than me and may have a better idea! Thanks.