2007 Magnetic

There are no official definitions. But, I'm of the opinion "rare" is way overused. Idiots slap "rare" on an ebay listing all the time.

For both terms, there is the issue of actual scarcity versus merely not seen often. And also whether demand affects a designation.

I would say under 100 known is rare and under 1000 known is scarce. And you can add "very" and "extremely" to both designations. So, without more evidence, "semi-scarce" is probably a good description for the 2007 non-mag.