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One further point:
When deciding which chainset to use, you need to consider wear on the chainring teeth. There's no sense in fitting some prestigious brand if the only ring you've got is clapped out - you're building the bike to ride it, not just to look at.
It's a bit hard to tell from your pics, but the 5 pin ring seems pretty good while the Williams looks past its best. All 5 pin rings seem to be interchangeable ( although TA and other metric rings will need a little 'easing' with a half round file to get them onto an english crank).
Bear in mind that the teeth do not wear evenly - those in contact with the chain at top dead centre and BDC have no pressure on them and therefore no wear. It's usually possible to move the ring through 90 degrees so that the worn teeth are relieved of pressure.
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clubman
Good tip re the pins on the chain ring! I'd have mounted them as they were. So, no, didn't know that. and didn't realise.