It has an indexed Shimano 105 SLX gearset and brakes, a Stronight chainset, and I found a nice set of wheels with Shimano 600 hubs in excellent condition.
It looks great and even received a complement from the normally hard-to-please Nick Van Vader at The London Cycle Workshop. He actually wanted to buy it as it fitted him perfectly. No comment.
The Stronglight chainset is geared for cyclo cross (46/34) which happens to be ideal for an 11 year old. I don't think it was a cross bike, but who knows.