This counterstamp "Dont Panic" is struck on a 1948 British half crown. I'm not sure what the message is meant to convey or even the age of the stamp, but I think it's good advice for all of us during these difficult times. While we all understand the gravity of the situation we're faced with, we need to remain calm and do what must be done to stay safe.
This may be the most important message I've ever seen on a coin. No, actually, IT IS the most important.
Stay well, everyone and watch over your loved ones. This will end!
Bruce