The Searchers - Love Potion No. 9

Looking in the database, I don't see any notations indicating which copies are mono, which are stereo, and I wasn't able to find a thread already discussing which one was the single version, if they're the same take, if there are mix differences beyond a mono fold-down of the stereo mix, etc.

I have found various collections with either mono or stereo versions, and while the mixes sound similar I'm unclear whether they are IDENTICAL. There may be reverb differences, and what might be mix differences might just be EQ differences.

I found a stereo copy on Rhino's "The Searchers Greatest Hits," but my ears question if it's possible that this is a needle drop based on a high frequency "edge" in the record and what sounds to me like a bit of surface noise and rumble, especially audible at the beginning and ending but also in quieter portion of the song... but my ears have deceived me before and it could just be tape/microphone/guitar amp noise.

I'd love to know if somebody (CFTP?) has done a detailed examination of the various versions of Love Potion Number Nine...

...and that's ANOTHER thing: looking at Discogs, the record labels can't decide how to spell it! Often the outside jacket will say "Love Potion Number Nine" while the paper label on the vinyl will say "Love Potion No. 9."

I'm also confused about the source LP, as "Meet The Searchers" appears to be the first time the song appears on an album (although not in the United States). When the single comes out in the U.S., the label says "from the LP, 'This Is Us.'" So, like The Beatles, The Searchers had different U.S. and U.K. releases at least at first, yes?

I'd love to know if the mono and stereo releases are different or just a fold-down, and further, I'd love to know which versions may be from master tapes vs. needle drops (if any).

Great info, KentT! Thanks for your reply.