So it has Sun Tour power ratchet bar cons, which seem really good on a quick test, and seem to be well regarded in their day, headset feels very sound and there are no grumbles from the BB, seat post was as free as a bird and the San Marco Rolls is in really good condition, and paint work is all in good order.
So I think pretty much what I need to do is a deep clean & degrease and relube & regrease. New inner & outer cables all round as the brake cable particularly are a bit rough looking and koolstop pads so I can stop the thing, and a new chain. Its got a 14-28 touring block so 38-28 lowest gear, which whilst not ideal for some of the local hills, is hopefully manageable. Better than 42-23 anyway!!
Wheels look true enough, but a bit dull and not a lot to indicate what they are. I may be back with photo's for ID help. Brakes are Weinmann 750 center pull calipers, which look in reasonable order, but not yet tested full effectiveness.
I recently treated my old Peugeot to a new rim & spoke rebuild on existing hubs, which might be an option going forward / longer term. I might test out to see if current calipers can cope with 700c rims, as it makes more sense for tyre choice and ability to switch wheels around. Or even get a spare set of 700c rims made up on some period appropriate wide flange hubs (just because I like that look).