Thanks for your suggestions Nigel. I do have an A.H.which I had planned to take out, but not a D.G.,also have the coconut husk seats. Have checked behind the panel at rear of baggage shelf and no sign of any box. The battery is a 30A/H wet cell. There is a lot of unused wiring and connectors which obviously fed previously installed instruments, D.M.E.,Vor Loc, Nav Loc and Ferncompass (?).
Unfortunately I only have a log book covering the last 10 years so do not know the full history but there are no signs of any major repairs. The finnish is in very good condition, so a repaint is a possibility. It has the twin landing lights, nav lights and fin top mounted strobe which, I presume, are factory standard. I agree that a re-weigh is definitely a must. Regards, Neville.
