Rick Derringer 'Don't Ever Say Goodbye' 12 inch vinyl promotional EP, a 1979 unofficial release, made in the USA by Blue Sky Records (Distributed by CBS Records).  The same thing is pressed into both sides of the record, one side is identical to the other, song, label, markings etched in the vinyl, everything is identical on both sides.  The catalog number is AS 737 or XSS 167127 I'm not sure.  When you look at the label it looks like AS 737 is the catalog number, but underneath it is XSS 167127, and pressed on the vinyl beside the label is XSS-167127.  Usually whatever is on the space beside the label is the matrix number, but I notice that most people refer to this record as AS 737.
 

The matrix number pressed in the vinyl, beside the label...

also this 'STERLING' is pressed across from the matrix number...

and near it, a star.

These markings a identical on both sides, the same master was used to press both sides.
 

The Cover - Plain white cover with a cut out in the middle.

Track List - The labels on both sides of this record are identical.

The Labels - The labels on both sides are identical.