Name: Air Tite Model A - Direct Fit A21 Capsule - 21mm
Brand: BOLD Precious Metals
SKU: SUPPLY-111100-A21
Price: 1.51 USD
Availability: InStock

Question 1

What are Air-Tite A21 capsules made of?

Accepted Answer

Air-Tite A21 capsules are made in USA with a high quality and crystal clear acrylic polymer. Such material is specially selected with respect to durability, scratch resistance, and its archival qualities. Importantly, it is 100 percent PVC (polyvinyl chloride) free, and includes a strictly non-yellowing agent to guarantee that the capsule retains its clarity after decades of being stored.

Question 2

How do I know if the A21 is the right size for my coin?

Accepted Answer

The A21 is a direct-fit capsule, which means it has been specifically designed with a specific internal diameter of 21.2mm to support a coin with that specific size that will lay stationary in place. This is the industry standard of all the major varieties of U.S Nickels (Liberty, Buffalo, Jefferson) and other international coins of the same diameter. To be on the safer side, you should always use a digital caliper to measure your coin. The A21 is the right size for your coin of 21.2mm.

Question 3

What is the difference between a Direct Fit A21 and a ring-type capsule?

Accepted Answer

The main distinction is the way the coin is fastened. A Direct Fit capsule, such as the A21, is manufactured to the precise size of a particular coin holding it flush by its edge. This yields a pure, uncluttered appearance of the entire coin including the rim. A Ring-Type capsule consists of a soft inert foam of a typical shape in the form of a ring that fills the space between a small coin and a larger standardized capsule. Although ring-type holders will provide more flexibility with odd-sized coins, direct fit holders will be used with more common sizes such as the U.S. Nickel because of the tight fit and borderless display.

Question 4

Are Air-Tite capsules truly airtight and safe for long-term storage?

Accepted Answer

While no non-sonically sealed holder is perfectly "airtight" in a scientific sense, Air-Tite capsules form an exceptionally tight seal that provides a superior barrier against ambient air, humidity, and other environmental contaminants. They are considered "archival safe" because they are made from chemically inert acrylic and are free of PVC, acids, and other softeners that can damage a coin over time. For these reasons, they are an industry-leading choice for secure, long-term collection storage.

Question 5

How do I safely open an Air-Tite capsule without damaging it or my coin?

Accepted Answer

Air-Tite capsules are designed to close securely and can be difficult to open with just fingernails. The safest method is to use a thin, sharp utility or hobby knife. Carefully insert the very tip of the blade into the seam where the two halves meet. Gently twist the blade to create a small gap. Repeat this process at several points around the circumference of the capsule. This will loosen the seal evenly, allowing you to pry the two halves apart without applying excessive force that could damage the capsule or the coin inside.

Question 6

Is it worth putting bullion or collectible coins in plastic capsules?

Accepted Answer

Whether the coin should be encapsulated is dependent on the value of the coin beyond the intrinsic value of the coin in the form of base metal. To make storage space and expense efficient, many collectors have been known to store common bullion coins ("stacking") in original mint tubes. But capsule is a worthwhile investment on any coin with a numismatic or semi-numismatic premium--be it proof coins, brilliant uncirculated (BU) coins, or low-mintage items. It helps to preserve this added value that is not to be erased by scratches, fingerprints, toning or other damages.

Question 7

What is PVC damage, and how can I tell if my coin holders have it?

Accepted Answer

PVC (polyvinyl chloride) damage involves a chemical change that develops when plasticized soft flexible vinyl holders wear out due to age. This can cause dangerous acids to be leached onto the face of the coin and a sticky, greenish film or what is referred to as a green slime is formed. This residue may lead to permanent corrosion and pitting which will ruin the value of the coin. Another PVC holder tip-off is a strong smell of shower curtain or pool liner. To err on the side of caution, invest in only hard acrylic holders of known brands that specifically states they are PVC-free or archival safe.

Question 8

What is the best way to handle valuable coins?

Accepted Answer

It is essential to avoid damage by handling it properly. To avoid damage by an accidental fall, be sure to place valuable coins always on a soft padded surface, as on a velvet tray or a thick towel. Use only cotton or nitrile gloves, which are soft, lint-free to avoid any contact between the coin surfaces and corrosive oils and acids present in human skin. Using the thumb and fore fingers grasp the coin by its edges. Do not touch the obverse (front) surface or reverse (back) surfaces.

Question 9

Can I clean my coins before putting them in capsules?

Accepted Answer

It is strongly recommended that you do not clean your coins. Nearly all forms of cleaning, polishing, or rubbing—even with a soft cloth—will create microscopic scratches on a coin's surface, which are easily detectable by experts. This damage, known as "improper cleaning," drastically reduces a coin's numismatic grade and value. If a coin has surface contaminants like PVC residue, its restoration should only be attempted by a professional numismatic conservator.

Question 10

What are the best environmental conditions for long-term coin storage?

Accepted Answer

The ideal environment for long-term coin storage is a cool, dry, and dark place with stable temperature and humidity. The recommended relative humidity is below 50%. Avoid locations prone to extreme temperature swings or moisture, such as attics, basements, or garages. A home safe or a bank safe deposit box are excellent options. To further control humidity within an enclosed space like a safe, the use of rechargeable silica gel desiccant packs is highly recommended to absorb excess moisture.

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Air Tite Model A - Direct Fit A21 Capsule - 21mm