Yeah, I've seen these once or twice before, but the Super 60's are super-rare. Probably made between '69-'73, part of that wave of upper-mid-fi models that came after the Leak buyout (by the Rank Group) in early '69. I assume that those Super 60's, like the W60E AND Dovedale III, do not have the sand-filled rear panel construction, unlike the W60D and earlier models. The drivers do look like Dovedale 3 drivers, and if that's the case, you will love the sound. One or more drivers should have a kind of doping solution called Mistar. The Dovedale III had been the result of research by John Collinson, a former Quad employee who had worked closely with Gilbert Briggs at those "live versus recorded" events back in the '50's when he was still working at Quad designing amplifiers. The Dovedale III was very-well-reviewed in England, based on what I have read, and it had a smooth, natural sound with very-coherent mids, so those Super 60's should be pretty-sweet.
Let them re-break-in a bit, especially the woofers, do a simple recap, plus a good cleaning of those pots, and those speakers should sound pretty-damn-good. If you have some vintage tube gear, preferably in the 30-50wpc range, definitely give that a try, otherwise try a solid-state receiver from that same '69-'73 era, with an emphasis on the warmer, tubelike brands like Sansui, Scott, Sony, Sherwood, etc. Be sure to place them high enough so that the tweeters are eye-level (You can put them vertically OR horizontally, but the eye-level tweeter rule ALWAYS applies, no matter which way you put them, so horizontal placement will require taller stands, obviously, since the horizontal placement changes the position of the tweeter
One thing that's been on my mind is the "Made In England" label on that rear center panel. I've seen lots of models from this period that DON'T say "Port Washington, NY" or "BIC/Wharfedale". Also, Arnold Hatton, the longtime Wharfedale employee, British expatriate, and trusted friend of Gilbert Briggs who moved to Port Washington to run the then newly-established BIC/Wharfedale division back in the mid '50's, had moved back to England around the early '70's, accepting a position at the much-expanded Idle facilities (probably to replace either Bill Escott or Ezra Broadley, who had both left Wharfedale at that time, though for different reasons).
Makes me wonder if this period signalled the end of the BIC/Wharfedale division, located at the main BIC facilities in Port Washington. The W60E and it's brethren were assembled there, but I've seen lots of the "****dale 3"-type models from that same point in time that say "Made In England", and when you consider Rank's big expansion move they had started in the late '60's, starting with the new site development on Highfield Rd. in Idle, not far from the Bradford Rd. facilities (Part of Rank's plan to try and centralize their hi-fi interests in that area following their early '1969 purchase of Leak), I have to think those "Made In England" models are indeed manufactured AND assembled IN England.
Put a little time into those, and I bet you'll like them. Should be a great speaker for classic-rock, classic-funk/soul/R&B, blues, jazz, Those Dovedale 3 drivers were the result of research into the various types of distortions that occur in loudspeakers, and the Super 60 would have surely benefited from that as well. Plus, it has the bigger cab as well. I would place them about 2-3ft away from the back wall, as those, like the W60E & Dovedale 3, likely do not have the sand-filled rear panel construction (If, for some reason, the DO have the sand-filled panel, then it won't matter how close they are to the back wall, but I'm 99.9% sure that those do not, so I would just stick with 2-3ft out from the back wall like I was saying).
I bet those would be great speakers for "All Things Must Pass", which sounds best with smooth, engaging speakers with coherent mids and highs.
