A question for Bill Harry, but maybe someone else can shed a light on this.
I was reading Richie Unterberger's The Unreleased Beatles the other day. He was bringing up the scellac disc The Beatles made in Hamburg with Lu Walters of Rory Storm's Hurricanes, containing the songs Fever, Summertime and September Song. Quoted: "According to [Alan] Williams The Beatles then wanted to record a disc on their own (after the session with Lu), offering to pay the ten pound fee themselves. Fearing retribution from Bruno Koschmider if the Beatles were late for their gig that night, however, Williams shunted them off to the Kaiserkeller club. But he did play the record they'd done with Walters for the Grade Organisation in London, with no positive results. In a more typical instance of the haphazard way he conducted his affairs, Williams lost his own copy at a London party years later, on his way to give it to Ringo so Starr could have one made for himself. Oddly, a photo of the record appears in Williams' biography.
Even odder, a December 1963 Mersey Beat article claimed, 'The discs are still available in Liverpool and being played regularly." Should one finally turn up, it might break the record now held by the surviving 1958 Quarrymen 'That'll Be The Day'/'In Spite Of All The Danger' demo as the most valuably British disc. End of quote.