Thank you for confirming my suspicion Ming. I know that I should probably be unhappy to find out that the marks on my bottles are misleading (to say the least). But you wouldn't believe what a relief it is to know that I came to the right conclusion about them: That they were made, or at least signed by the same person which means that the marks on bottom have to be fake because they are of two different dynasties. Even if I didn't have both these bottles I would still have known that the mark on the older bottle is fake because the color of the mark is all wrong. Not too long ago they would have fooled me completely. It's a good thing to know that I have some knowledge and that I applied it correctly.