Is this a lightened flywheel (inspection plate pic included)

[soldave]

Am planning a clutch swap this weekend in my '91 S5 Tii and tonight was just making sure I had everything. Clutch: check, lightened flywheel: check, bearings: check. Then I realise that lightened flywheels need a counterweight for the flywheel. Remembered that the previous owner of the car said his butt dyno and knowledge of having a few FCs before said that there could very well be a lightened flywheel in there, but he couldn't say for sure as it would have been put there by the previous owner.

I dropped under the car, whipped off the inspection plate and took a pic. I've no real idea what I'm looking for, but you can see the flywheel in it. Apologies if this is a dumb question but does it look like a stock or aftermarket flywheel to you? If I need to clean it all up, let me know.

Cheers in advance