unidentified butterfly

unidentified butterfly

Observation - unidentified butterfly. Description: much larger than the small tortoiseshells around it - perhaps even larger than a red admiral and peacock - a coppery colour not patterned, but with veins showing and a hint of freckled spots. I have never seen one of these before and it went before I cou

much larger than the small tortoiseshells around it - perhaps even larger than a red admiral and peacock - a coppery colour not patterned, but with veins showing and a hint of freckled spots. I have never seen one of these before and it went before I could get a good photo. The nearest in my book is a scarce copper. Any ideas?