magnetic message board, to do list & memos pads matching set by Martin designs

Almost new. Made in 2002. It has never been used I was able to take out and test the marker that came with this and it didn’t work. So, I replaced it with a working one with a magnet and eraser on the cap. When I inspected this I noticed it said that it came with 3 unique refrigerator magnets. I see a slit in the plastic keeping the set together and I think one of the magnets must have fallen out.