I have what I believe to be the earliest issue of this cassette.It has the green label but also "Sold in U.K. subject to resale price conditions. See price list." printed on the label as well as the card.
The clear leader tape has PCS - 7027 - M8T printed in black.
Added scans of later Gold-inlay series (dating from 1972 until 1986):
1 cassette, 1 inlay. Tracks 1-7 make up Side 1. Tracks 8-13 form Side 2.
EMI "Gold issue" inner, without barcode; without "G&L" printer identification on inner inlay (earlier issues had this). The gold-colour printing is of the "lighter" variety, suggesting also a later issue than the earlier "metallic gold" inlays. White cassette shell with blue ink.
Blue cassette ink and lighter gold inner suggest a release date of between 1976-1982.
(Cassette bought in 1981, in the great, long-lost Rival Records record shop in Bath, Avon, just after John Lennon's assassination in December 1980).
I think all the EMI cassettes had the play speed on until into the 80s. So unnecessary - as if anyone needed to know the play speed, when sticking them into their cassette deck!
"Sold in U.K. subject to resale price conditions. See price list."
You won't see that on many cassettes, and 1⅞" I.P.S. for the tape speed, so retro.
(cassettes played at one and seven eights inches per second, half the speed of a standard reel-to-reel tape recorder at 3¾" I.P.S., which is half the speed of a hi-fi tape recorder at 7½" I.P.S., up to 15" I.P.S. for recording studio quality tape recorders.)
I have a couple of very old cassettes from around the same era, and when I dig them out I'll post them.