Collecting letters from Pokémon has ceased to be a hobby, and for many it has become an investment. With these collectibles reaching hundreds or thousands of dollars, you are likely to have a fortune hidden in your home without knowing it. In this way, Here we tell you how to measure the value of your Pokémon cards. To start, there are two factors that you need to consider. The first of these is the rarity of your letter. Each has a symbol in the lower left. A circle is common, a diamond is uncommon , and a star is rare . Usually, these are black, but if you run into a white or golden color, this means that they are ultra rare. Another element to consider is the edition of the letter. If it is first edition, it is worth more . Similarly, if it is chromatic, you can demand a higher price. Along with this, there are standard versions of these cards, full art, from rainbow, and brilliant versions, which have their own established value. For its part, letters starring Harvard, Bla...