The other 3 sides & top of the box are tagged 'FRAGILE/ PERISHABLE/ EGGS FOR HATCHING ENCLOSED/DO NOT XRAY / DO NOT EXPOSE TO HEAT OR COLD'.
I don't know labeling boxes has an effect on how they are handled by the PO --- but my labels amuse me.
The end-all is how the eggs are packaged INSIDE the box, that's REALLY what's important
Dipsy, that is also a great label. The DO NOT X-Ray is seems important, hadn't thought of that. I think a label makes most PO folks handle the eggs more carefully. They surely don't want a sticky mess on their hands, plus "live" makes them think "careful".