Plastic coin holders airtiteare the most familiar categories of coin slots for holding different varieties of coinage from foreign coins to the high value historical coinage. They are available in many types and types each having its own distinct attributes that it's essential to know precisely what certain kinds of collectible coins will be designed for each variety of hard plastic coin holders. If you're a flourishing coin collector, looking over this page can be extremely worthwhile for any thriving coin collecting endeavor.