This flexi is from 1983. I couldn't find any info about 57 Tone online. I recall picking this up because the cover reminded me of the art for DDAA/IP label sleeves. I have to say, the music here well exceeded my expectations.
The A-Side falls right in with early 80's Factory/Fetish/99/Clock DVA guitar/bass/sax/drums combinations. The B side is more abstract and closer to something from the Vanity label. A part of this track was featured in my Final Procedure Mix from last year.
b: 4 Reminiseences