I would like to know if the 'dark beta' Sapphire has this mark. if anyone has one, could you enlighten me? If you are wondering what 'dark beta' is...
I checked a 'dark beta' Sapphire, and there is no such marking on the card. Hopefully it's of some use down the road...
one time a guy walked into the printing factory and printed himself some rare sheets. Some people say he did more than just rares, and some say more than just beta, but what matters is - these cards are very hard to spot as fakes using any of the tests. They do not pass the natural vision test though - they have distintly different inking patterns.
Also, there is more than 'beta dark' power, certainly he must have printed off later versions of power (both UL and B) from what I've seen. Luckily, if you have spare power to do a comparison, like mike stated, you can see the printing is not only slightly darker, but the pictures themselves seem to be offset slightly.