undated 20p coin

[djwepg]

My friend has just found one of the undated 20p coins in her purse (have checked news item and it is undated) .
What can she do to sell it at a good price

[aprhys]

I doubt all five have them. If they are then they're very very lucky. Neither side has a 2008 or 2009 on them - many people I know who have looked got their hopes up until I pointed out the year on the other side.