The Bottom Line:

Very rare white label DJ promo 12 inch single.

"Promo Only - Not For Sale"

Side A: Sunshine's Better [Sunshine mix], 13:53.
It only has a sticker "Promo Only - Not For Sale".

Side B: Sunshine's Better [Original mix], 5:51
Label carries handwriting "John Martyn The Sunshines Better".

I suppose this record was pressed October 1996 based on the 96-10 from the mold number.
A press sheet was also included.

Mold numbers:
D F1-96-10-SSB-1A1 and D F1-96-10-SSB-1B1 (stamped).
Also scratched "The Exchange - NiLZ".

info kindly provided by Richard Olsen