I googled:
"Here's the difference: in the US, there are laws mandating that (USDA rated) eggs be washed and sanitized before they are sold. This removes a protective membrane that allows for safe room-temperature storage. In other countries, the membrane is not washed off, which is why they're sold in regular aisles."
"The shell is produced by the shell gland (uterus) of the oviduct, and has an outer coating, the bloom or cuticle. The cuticle somewhat seals the pores and is useful in reducing moisture losses and in preventing bacterial penetration of the egg shell. Much of the cuticle is removed from table eggs when they are mechanically washed."
I personally have seen some relatives who had working farms (when I was a lot younger) store them on the counter in a neat little wire basket.