Mica,
Hey there. I just dropped back after 4 years to try and find the build report on a S/N request I posted back in 2012. Alas, with whatever was going on at the time I only managed to get a guess and not the full details, so I'm asking again.
Bought this used in '12 and it's been just a superb bass and worth the shoulder damage. LOL Series I s/n 77-681.