Already did - it's 1050 with STI* added later. That places it somewhere between the mid 80s.
*Now that we've seen the close up, it's clear that the STI levers are quite a recent addition, look like Sora ST-3300 but somebody familiar with low end Shimano will know for sure, or you could just look for the part number stamped on them somewhere.
Looks like the levers are Sora yeah, Too bad, thought it was fully 105.
shimano 2300 i think. 1 below sora