The Rare Live Recordings label (Spanish bootleggers) released in 2006 the double CD John Coltrane Live at the Showboat
taped at Philadelphia's Showboat club on June 17, 1963 during the Coltrane quartet appearance there with Roy Haynes subbing for Elvin Jones.
RLR is now releasing more music (out next week) from that gig (taped on June 24)
It seems that McCoy Tyner showed up late that day and part of the appearance was by Coltrane backed by Garrison and Haynes only. Tyner finally appeared for the end of the fourth of the eight tunes included. The CD ends with a solo piano by Coltrane on 'After the Rain'!
Probably this will be in the same rather mediocre sound of the first release.