asked the Postmaster-General whether it would be practicable, in the case of any new stamp machines that are supplied for public use, to arrange that they can be operated with a shilling or a sixpence, as well as a penny or a halfpenny, in view of the difficulty in many cases of obtaining sufficient copper coinage on days when shops are closed and these machines are most in demand?

A combined stamp-selling and change-giving machine could probably be produced, but is likely to be both complicated and expensive. I will, however, bear the matter in mind.