Gibson factory 2 nds..

I tried a seach on the 2nds.
The best Lp I have owned was a black custom with a 2 on the back of the head stock. it had 2 nickel humbuckers, and it had a wonderful tone to it. I am looking for some history of the 2 that were made, and why they made available to the public.
I bought mine in 78 from a local music store, which went out of business in the early 90s.
im curious about if these guitars were meant to be released to the public.
regards
dk

No seconds since 1985, officially, but some guitars they've let through are no doubt questionable. There's not that much to seconds. Usually, just a minor flaw that did not warrant destroying the guitar but something that they figured would not sell at full price.