Where are white markings generally expected on a standard Old English Sheepdog?

Answer

On the forequarters, neck, or as a blaze on the head

Accepted variations of coloration require white markings to be present in areas such as the forequarters, neck, or forming a blaze shape on the head.

Where are white markings generally expected on a standard Old English Sheepdog?
Dogcharacteristicbreedsheepdog