No there is no such period TMK. If there were one some of us be it RD or LL or me would know. There is only a 6 month restriction from the point when a debt is issued. IOW the debt must age for 6 months before shares issued for settlement of that debt can be sold. LL wrote a very important post on this matter that is posted under "educative IHub posts" in the intro section of this board . I suggest that you go back and read it if you are interested.