Old school.
Quite being an ass, this is incredibly subjective. I've heard plenty of people refer to the early to mid 80s as Golden Age hip hop. There's no one standard. Heck, even wikipedia reads it "usually cited as being a period varying in time frames during the 1980s and 1990s" and the artists most commonly "assoicated with the phrase are Public Enemy, Boogie Down Productions, Eric B. & Rakim, Beastie Boys, Big Daddy Kane, De La Soul, A Tribe Called Quest, and the Jungle Brothers".
http://en.wikipedia.org/wiki/Golden_age_hip_hop
I don't even use the phrase because personally I think it's stupid. To me, anything 15 years or older I generally lump into "old school". It's not like those phrases are even genres themselves, so there's practically no solid ground to debate these terms on. Just categorize it however you want: your right. he's right. I'm right. we're all happy. let's get funnel cake.