You ought to be able to tell for sure when you disassemble it.
It's a Meer. And, I'm roughly 95.6832% sure that it's a Strambach. It has built-up cake in the chamber which has been incredibly stubborn when I've been attempting to clean it. I've been trying to be very delicate with the cleaning process, because everything that I've read or heard about Meers. is that they don't ghost, look awesome with the proper patina, and are fairly fragile. The outside of the shank has some scratches and scrapes, but nothing too bad (although I have tendencies to be a utilitarian). Even with some cleanup, $12 for my first Meer, I consider it a good buy.