I think these are very popular amongst the collectors. To start a thread I have attached a few out of my collection. The Hudson's cloverleaf has had a bit of TLC from The Godfather but is a very old example. The Onoto came out of a printers in Wisbech and has never been used. The Rowntrees was from an auction on Enamels1000's doorstep but I think he was making cups of tea that day and missed it.