...a very early work (1897), from Nimbus:
http://www.mdt.co.uk/bloch-music-for-cello-and-piano-wallfisch-york-nimbus-records.html (http://www.mdt.co.uk/bloch-music-for-cello-and-piano-wallfisch-york-nimbus-records.html)
Not a premiere or anything, I have a digital version from a 2004 Signum CD. Nice enough piece, I suppose.
That Signum CD was prepared 1996 according to its notes, and the work itself was only found among Bloch's mss and premiered a couple of years before. Still unpublished aside from the LOC digitization which may count as publication for some purposes. Mirrored @ IMSLP. Wouldn't mind a more exact premiere date and place!