Thanks Billy but this highlights the problem with sound files, they sound poor. I can hardly tell the difference between 1 & 3 they both sound speeded up. In reality they are very different alternatives. The Searling sound file is just a very bad quality variation on the first Kent release, it's not a different piece of music just an inferior copy that is sometimes speeded up or not as in the vesion on show here.
It's like playng a record at 45 and then at 48 and saying it's a different piece. I challenge anyone to seriously compare the Searling acetate and the original Kent version by playing a few seconds of each n turn all the way through and say there is anything different in the recording apart from varied speed, different EQ (bass, treble etc) and editing.