Thanks for all your help folks. I've downloaded the Suggested grading book onto my iPhone and I'm finding it excellent. Going back to the florin I've got a 1906 in the hand now to compare it with (CGS graded 55 uin 12521). The 06 I would say looks cleaned compared to the 08- it is much shinier/whiter with surface sratching but despite this CGS didn't reject it for being cleaned, the 08 on the other hand is better toned with less wear. I'm getting more confused the more I look at Eddie florins!