The Bottom Line:

USA issue with one side stereo, one side mono.

John and Beverley Martyn

"Warner Bros Records
Promotion/ Not for sale
From the/ Warner Bros/
Album WS 1882/
Road To Ruin"

Released only in the US to promote The Road To Ruin. Side A is stereo, side B mono. Apart from this both mixes are identical.

On the label is also printed:
Intro :08"

Additional (mold) numbers:
NA19172(S) (A-side) and NA19172 (B-side).