1976 was the big year for change, with Ludwig. They went from the 3 ply shell with reinforcement rings the the straight 6 ply shell. Serial #'s can sometimes be accurate, sometimes not. Pointy corner blue/olive badge is '79 and earlier. '79, Ludwig started rounding the corners.
So .... easy to tell is these have reinforcement rings or not. Look inside the drums. It's gonna make a BIG difference in what they're worth. A 3 ply kit might fetch $1000 or more. A 6 ply kit, probably not. Your bass drum has a port. Look inside and see if there's the reinforcement rings in there. They're at the edge of the shell (where the head and the shell contact).
Nice Reverb ad (IBite) ..... you can see the reinforcement rings I'm referring to in the bass drum, thru the clear bass drum head. And I agree that we're probably looking at a 22x14, 12x8, 13x9, 16x16 kit. Now for the buts ..... that's Australian Dollars, which translates to about $1257 US. AND ..... if your kit is indeed a 1977 (it'll be a 6 ply straight shell then) it won't fetch anything close to $1200. Also, vintage American drums tend to go for more outside the US.
So ..... find out what type shell you have here ...... it says you're in Los Angeles ..... I'm in Pasadena.