A postal order, either crossed or open is only valid for a period of? by Sunday | Jul 24 | Commerce WAEC | 0 comments A. 12 months B. 10 months C. 8 months D. 6 months E. 5 months Correct Answer: Option D – 6 months Users Also Read These:Which of the following is the safest means of…Who among the following generally has no capacity to…When an axon is at rest, the concentration of ions…The fees charged on the postal order by the post office is?A crossed postal order is?