interesting question - there may be several 'values' The insured value, the sale value, the replacement value, and in the case of a vintage a/c maybe the rebuild value which is likely to be the highest of the four. Like most I think the group I'm in has based share value on the insured hull value which I has probably undervalued the a/c if we had to rebuild or replace it following a serious 'event'. I imagine many others operate in the same situation