Hope you dont mind me butting in but the IWM gallery has a good picture of the original at
http://www.iwm.org.uk/collections/item/object/30076844
As well as the narrow crown originals have a wrist on the hand, the stem is narrower also and the top vane on the left hand leaf is straighter. Copies tend to have one shaped like a banana. Patterns can be slider or loops.
Alan