Looking at this again, there's a couple of things that come to mind
1, we make the pens and give / sell them and mostly never get to see them in action, yes we get feedback but nothing like this.
2, to make something to be used for a purpose and to see the results must be a great feeling
3, to make something special for someone special and to be able to see the result, awesome
How great must George feel when his dad used his pens and created this, and how great must his Dad feel to be able to use something his son made to create this.
Truly Inspiring ....
Well done Mr Burdon .... both of you ... :bravo: