Further confirmation that this is at least 1965 comes from the albums illustrated on the back cover, SHOWCASE being a 1964 release, and HOLLY IN THE HILLS being 1965.
Revisiting this one because of the comments on the US issue; the matrix numbers on the labels here are way higher than on the 1961 mono release, and comparison of the numbers to Aussie Coral and Festival 45's at 45cat suggests that this would be a late 1965 or early 1966 release, and that would tie in with the US stereo version apparently being a 1965 release.
I am wondering where the 1965 date on this release comes from - I remember my sister having this long before 1965 and she bought it second hand. Michael De Looper has it as August 1961, that would be more like it.