Does anyone know why the card backs of the Dr No set are randomly coloured either grey or white.

I can't work it out.

All of my Dr No cards have a gray back, but quite a few of them have white spatters, like bird droppings on them.
RA has done UK specific boxes before, I noticed someone else from the UK has mentioned the white backs.
Don't worry, some of the great card sets from history have had white/gray backs, like Red Menace and Davy Crockett.

I have all 108 cards and all mine have gray backs without any hint of white. Can any one post pictures?

Wolfie asked me to post this for him....

Thank You Harris and Wolfie and even bigger Thank You to Womble for the picture of the backs.

He's a nice chap that Womble.

When I finished opening my case I had 2 complete sets and a stack more of duplicates and they are all gray.