Beautiful!
I do rather wish people would stop saying that a push-pull 50c5 amp using the very high efficiency speakers of that era can't put out more than 'background' sound levels.
We're not talking about a jam-packed disco here, we're talking about a home environment. The sound level without audible distortion is more than adequate.
Those are beam-power tubes - more efficient that pentodes, lower third-order harmonic distortion and (relatively speaking, I acknowledge this isn't a high-power amp) considerably more power output than an equivalent pentode.
Collaro produced various turntables apart from the Micromatics we all hold in such fond memory. I'd practice minimal maintenance on this - if it ain't broke, don't fix it. Any 60 year old motor using that era's horrid 'lubrication' may well seize up. No big hu-hu, it's not as if their bearings are made of dilithium crystals. Just thoroughly clean out the old gunk, lubricate with Blue-Can 3in1 (I said Blue, ladies, not 'red' and if you don't know the difference, then don't snap right back) and be careful - there may be a tiny ball-bearing at the bottom of the shaft, waiting to get lost. Collaro, like all UK manufacturers, had to use what they could get in that era so don't be surprised if the motor isn't what the catalogs say it must be. When you put the motor back together, pay close attention to tightening everything evenly and gently - better to use threadlock and not as tight as too tight.
Before you send off the rim-drive wheel to be rebuilt, pay super close attention to how the idle-position is set up. I haven't worked on one of these in decades, but recollect that it was far easier to get wrong (whilst still looking right) than the V-M Tri-o-matic design.
Might as well replace the cartridge at the same time.
Personally, unless I had a Unimatic waiting for me (right now there's another Flair a Filter-Flow and a mid-seventies Westinghouse FL), I'd bring this one to the front of the queue. There is going to be lag time waiting for the parts anyway.
Oh, recapping - if you're not as experienced at is as you'd like to be, remember that even the 'deadest' cap can still carry enough current when unplugged to fry something expensive - or kill you. If there isn't one, I'd add a fuse in line. Replacing the output transformers on this would be painfully expensive.
Color me jealous.