Three commercial premieres: quartet no.3 Op.64 in D minor, no.4 Op.99 in G minor and no.7 in C minor (Op.166, 1918 or 1919). See https://www.mdt.co.uk/stanford-charles-villiers-string-quartets-dante-quartet-somm.html (https://www.mdt.co.uk/stanford-charles-villiers-string-quartets-dante-quartet-somm.html) (MDT). Not expected out until late August. No.3 can be heard @ IMSLP and in a rare aircheck, and was published commercially; no.4 has been analyzed and published in score and parts in a recent doctoral dissertation (can be downloaded) ; no.7 was broadcast over BBC , a performance which I believe can be heard over YouTube, but this new recording is I believe the commercial premiere of all 3.
Nearly there at last. I assume the Dante plan to couple the unheard (by anyone here?) No.6 with the familiar Nos. 1 and 2.
What good news!
Is it certain that no.6 still exists? The author of the recent summary @ MusicWeb seemed to imply some doubt, but I may have misread.
According to Jeremy Dibble's biography of Stanford, the full score and parts are in the Robinson Library at Newcastle University, UK.
Thanks! (I had that book on interloan once but either didn't notice that or forgot it...)