I grew the "real deal" back in the 70's. I can say for a fact that it won't look like what we got in the 70's for the simple fact that A: what you grew was indoor, and B: the way the 70's weed was processed and cured is far different than the way you grew and cured.
Sooo, that being said, it's hard to say for sure what you have is OG 'Lumbo gold, however it looks like primo herb and there's no way to tell from a pic if it's truly legit.
The real deal took 12-14 weeks or more to mature and because of harvest and cure methods used by the Colombian growers back in the day, the weed direct from the source at the time didn't look like what we grew from the seeds in those bags.
So, maybe it is, maybe it ain't, but without a genetic test, it's nearly impossible to tell for sure. It does look a lot like what we grew from seeds we got back in the day.
Cherry Bomb x C99
Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying. - Arthur C. Clarke