A few days ago Agnus Dei posted some pieces by Johann Tobias Krebs, and did a small biography which I won't repeat here. For that, just go to http://www.contrebombarde.com/concerthall/music/16451
This trio was attributed tot Bach, but according to the manuscript I transcribed it from, it was composed by Krebs.
A nice detail in this piece, I think, is that at the spot where the melodic tension is the heighest (bar 24) the position of the player is most uncomfortable. Both feet at the left of the pedal board, and the left hand somewhere near c3. As player, you can't ignore the tension in the music...
Score available here: http://partitura.org/index.php/johann-tobias-krebs-trio-c-moll/