Select a 2x2 cardboard flip coin holder with the appropriate window diameter for your coin. Center your coin within the circular window opening (on the film side). Fold the cardboard flip coin holder in half covering both sides of your coin and temporarily holding coin in place. Carefully staple the coin holder together (approx 3 - 4 staples) being careful not to nick your coin or pierce the film window with a staple. With a little practice you'll have no trouble centering your coins. (Optional) Mark the brilliant white side with your coin's year of issue, country, grade, and/or Value Recommended storage pages, boxes for 2x2 cardboard flip coin holders Store your protected coins in 2x2 cardboard flip coin holders in any of these recommended storage supplies: 20-pocket vinyl coin 20-pocket vinyl coin pages 20-pocket hologram coin pages coin boxes, trays