GUESS 9 ...

It is a poster produced by the British government

 before the beginning of the Second World War.

It wasn`t very well-known at that time

but

nowadays, it seems to be EVERYWHERE.

Here you have a few examples:

There are lots of them...

So, why don`t you send us your favourite one?

What about the message?

What does it mean?

There are different free versions as you can see in these examples:

Look for some examples and

 send us the most original.

If you want to have more information about 
the story of Keep Calm... CLICK HERE.
It won`t take long... it`s only three minutes!