Which breed laid this egg?

[juniperz]

I don't believe these are calcium deposits. The white spots are not textured and are fairly evenly spaced throughout the shell. It's also happening with the right frequency to be coming from one hen. Whoever it is was laying this type of egg last year too, but I wasn't paying as much attention. (The eggs are always more special after the winter break!)

 

[BigBlueHen53]

The only brown egg layers I have in my flock are three Buff Orps, and I occasionally get a speckled egg like that. They are not all laying every day right now. But I agree with @ChickenCanoe; it could be a BO laying your egg, but it could also be any of the others as well.

Edit:spelling