The pattern is close to the real thing, but to the experienced eye it looks very wrong. The overall style of these items is wrong, with incorrect shapes and wrong glaze colour. Whilst it looks totally incorrect to the trained eye, it could pass as the real thing to a novice. Many fake sifters are known to be circulating, some of which are very good copies and some which are extremely poor. Check the weight of the piece.
Fakes often feel far too heavy or too light.
Check the quality of the paintwork. Fakes are often poorly painted or badly banded. Check the colour of the glaze. Most CC sifters from this era have a 'Honey' type glaze, not a white one. Be wary of the price.