looks like a titanium sr rear derailleur to me. The bolts...do they stick to a magnet? The non-titanium bolt SR was a lot later, like the last gasp in about '87, I think. The rest of it is either Record or Super Record...and as a collected group, it would be called a Super Record Reduced (without Titanium BB or pedal spindles...urh, those bits are not Titanium, right?)