Since posting the above question , I have found David Elliots book for sale on line ...but I have also asked myself , should I even be contemplating restoration on my first ever concertina, which I am just been reliably informed is a 21 key Lachenal , I am a reasonably competent tinker - mechanic (Brit Bikes), so I suppose I am wanting some guidance about the job a competent amateur might do and the job a Pro would do . Which leads to another question, 'are there any restorers here in New Zealand ?
I would only be doing pads, valves and bushes, and there is a small leak in one of the bellows corners... reed work ? no . I've just read there are restorers over the ditch in Oz , what might I expect to pay for a freshen up ? thanks Barry