50. Capital which a claimant possesses in a country outside the United Kingdom shall be calculated—
(a)in a case in which there is no prohibition in that country against the transfer to the United Kingdom of an amount equal to its current market or surrender value in that country, at that value;
(b)in a case where there is such a prohibition, at the price which it would realise if sold in the United Kingdom to a willing buyer,
less, where there would be expenses attributable to sale, 10 per cent. and the amount of any incumbrance secured on it.