If an unlimited company resolves to be re-registered as a limited company under this Act, it may—
(a)
increase the nominal amount of its issued share capital by increasing the nominal amount of each of its shares, but subject to the condition that no part of the increased issued capital shall be capable of being called up except in the event and for the purpose of the company being wound up ; or
(b)
provide that a specified portion of its uncalled share capital shall not be capable of being called up except in the event and for the purposes of the company being wound up.