Butterfly

Butterfly

Observation - Butterfly - UK and Ireland. Description: Aprox 25mm across. Have looked in my butterfly book but there are so many that are similar. Thanks for the ID. It looks rather washed out, will this be old age ?

Aprox 25mm across.
Have looked in my butterfly book but there are so many that are similar. Thanks for the ID. It looks rather washed out, will this be old age ?