Unknown moth - possibly Mottled Beauty

Unknown moth - possibly Mottled Beauty

Observation - Unknown moth - possibly Mottled Beauty. Description: Forewing length was about 20-21mm. Feathered antenna. Does not have the markings - on the forewing underside - that the Willow Beauty has. Please - can you help me with identification? Thank you very much.

Forewing length was about 20-21mm. Feathered antenna. Does not have the markings - on the forewing underside - that the Willow Beauty has.

Please - can you help me with identification?

Thank you very much.