Our ranges are S for anything below 53g, M to just below 63g, L to just below 73g, and XL for anything 73g and up. I had eggs in the 85+g range from that farm shop occasionally (that must have been a monster chicken!), and even one 10-pack with 7 double yolk eggs once.

Once they had an offer of size S eggs, and even small ones for that group. They were not much bigger than Quail eggs and from the first layings of young hens. I bought a box of them for fun and fried three of them for breakfast. My son took a look at the tiny little egglet I placed on his plate and he asked me what I had done to the rest of the egg...