For those who enquired, the reason I have a new helmet is that the first one I bought was what is known as 'open-faced'. In other words, the protective material only covers the the top and the sides of the head. As a consequence, the face was open to the elements unless I used a scarf or a custom-made face-mask as shown below.
Unfortunately, although this sort of protection might be adequate whilst riding around town, it really isn't very good on the open road; so, I looked for an alternative and came up with this.......
At first sight, it might seem that - apart from the colour - there isn't much difference. However, as is demonstrated in this video, the are significant differences. For example, the portion above my eyes (above) is on a hinge and can be lowered down to provide protection for the whole head (face included). Other features of the helmet include an internal sun visor and a ventilation system.