I believe that the first release called "Discovery" said the set was by the 1957 group. The Blue Not box set includes notes by Bob Blumenthal which state
"...the bassist and drummer were clearly not Wilbur Ware and Shadow Wilson, who had completed Monk's quartet as the album notes mistakenly listed. Further research has determined that the performances were taped on September 11, 1958 when bassist Ahmed Abdul-Malik and drummer Roy Haynes were regulars in Monk's quartet ad Coltrane was sitting in for the absent Johnny Griffin. What we hear, from a source tape made by Coltrane's wife Naima, is a complete set..."
The notes also say " on the original CD issue of this session, the pitch ran 1/2 step too high."
When I get "the complete" cd I'll see what they say about the dates etc.