#3
Yeah, that looks like an ERG 121 UC2G to me. As far as I am aware, the difference between the ERG 121 and ERG 121 UC2G is in the gold hardware. Just to let you know:

ERG = Series the guitar belongs to (although the ERG series is just 2 guitars!)
1 = Basic specs. Higher first numbers indicates better specs but the ERG series is Yamaha's starter series anyway.
2 = 2 Humbuckers
1 = 1 Single Coil
UC2G = Not entirely sure what this is but it refers to the gold hardware.

I'd be tempted to buy one of those and mod it out to higher specs myself if it didn't have an Agathis body.
Guitars & Gear:
Parker Nitefly M
Sumer Metal Driver
Ibanez RGD2120Z
AMT SS-11B
Two Notes Torpedo CAB