andrew wrote
second I'm guessing is an F40. Others I'm not sure
second is an F40
the first may not be obvious just looking at the desing if you are not familiar with it, but there is one very distinctive clue that will give it away if you can spot it.......and even know why its that distinctiive.
the third is hard, but once you know, it does become obvious as theres kind of a big red flag right there if you pick up on it