I got another of my new-year money pipes and I'm not sure it's what the seller said it is. It was listed as a Brigham but the markings have worn down to being basically unreadable. What it does have is a stem with 4 light blue dots on each side and a patent # of 1513428. There is no maple filter system in the stem either so I'm not sure what I have here. I tried looking at the stamping under magnification with light and I think I know what it is but what do you think?