Riddle

The Cohen family wanted to host lots of guests on Shabbos parshas Chayei Sarah. But they did not have enough tea spoons for the ice cream. So Mr. Cohen went to the store and bought a package of 20 tea spoons. When he returned home, Mrs. Cohen said to him: “We only need 10 of these spoons for the seuda. I'd love to keep the other 10 spoons for the michik's side of the kitchen. But, the problem is that they all look the same! So let's label 10 of these spoons."

Which spoons should be labeled?