I found one at last! It was in the grass beside the road to the beach where I have seen them in previous years. This time I was lucky enough to get there before some well meaning person/vandal kicked them over. It has a wonderful russet red cap fading to tan at the edges and those spots on top look like iced gems, those tiny biscuits we used to buy when the children were small. I carried it home carefully in a tissue and it even survived an unexpected visit to a neighbour who waylaid us to stop for a drink! I have some photos as well from another group I found down the lane so I will make a spread in my watercolour sketchbook although I much prefer to draw from life as I've done with this one.