I think the basic problem is the number of dies that were made. Unless you have a definitive study of the coinage, then there will always be differences which you have to try an differentiate between kosher and suspect. The shilling jewels just looked too bulky for my liking. This however, may be a timing difference because the Spink plate and OP coins are 1554, whereas the one I posted is 1555. Also, copies tend not to embellish detail. The P&M was from DNW 10 or 12 years ago but I don't have anything before that. The surfaces weren't very nice in any case - it had clearly been dug. I don't have this any more as I couldn't live with the scratch etc. The weight was ok. The testoon was ex Noble sale 1973 and one of Ras' lists. As you said, ideally you need them in hand.