As for the countermark, it does appear rather odd. I'm still not convinced. I've requested larger images, but we'll see. As an aside, can someone else type timeline originals into Google.co.uk and let me know what the second suggestion is? As you can imagine, there are not a lot of image resources for the countermarked coins of E6. I've circled the regions which particularly caught my eye. There's not enough to go on unfortunately and, what looks especially similar between the two coins is, in fact, part of Edwards tunic/armour. I doubt we'll ever know and, even if we did, why anyone would be playing around with an old punch at the mint is anyone's guess! Thanks, Clive, for securing the image!