I bought this 45 when it was originally released (RCA 74-0461) BUT, I've never seen a demo with that release #.
There are these variations- SPS-45-264 with the 4:02 long version on both sides in Stereo.
Then there's SPS-45- 275 with a 4:02 version on one side and a short 3:22 version on the other side (both stereo)
Finally there's a SPS-45-281 with the 3:22 Stereo version on both sides.
I've also seen a variation of the SPS-45-281 on the later tan RCA label .
If I was a betting man, I would say this was the original release-