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The standard protection stack is: penny sleeve, then a top loader, then a team bag or a piece of tape across the top loader's opening, then a rigid mailer or a small box. Cards travel flat, never loose. For anything valuable, add tracking and declare the real value.
This is the reseller's standard, and each layer has a job. The penny sleeve is a soft, snug plastic sleeve that protects the card's surface from scratches. The top loader is a rigid plastic holder the sleeved card slides into, which stops bending: the number one killer of card value is a crease, and a crease is forever. The team bag is a resealable bag that fits over the top loader and seals the card in, keeping it from sliding out of the loader in transit. If you do not have team bags, a strip of painter's tape across the top loader's opening does the same job. Do not use regular tape directly on the card or the loader in a way that leaves residue near the card.
One detail that matters: put the card in the penny sleeve first, always. Sliding a bare card directly into a top loader can scuff the surface, and surface condition is a huge part of a card's grade. The order is sleeve, loader, seal. It takes ten seconds and it is the difference between a card that arrives gem-mint and one that arrives "pack fresh, unfortunately."
For one or a few cards, a rigid photo mailer or a small box beats a plain bubble mailer. Bubble mailers protect against impact but not against bending: a mailer can fold in a sorting machine, and the cards inside fold with it. A rigid mailer or a small cardboard box does not fold. For larger orders, sandwich the sleeved and loaded cards between two pieces of stiff cardboard, rubber-band the sandwich, and box it with filler so nothing shifts.
Tape the box well and do not mark it with anything about the contents. "Do not bend" stickers are popular, but treat them as decoration: sorting machines cannot read. The rigid packaging is the protection; the sticker is a wish.
| Shipment | Packaging | Service notes |
|---|---|---|
| 1-4 cards, low value | Penny sleeve, top loader, team bag, rigid mailer | Tracked parcel service; keep the receipt |
| 5-20 cards | Sleeved and loaded, sandwiched in cardboard, small box | Tracking plus declared value matching the sale price |
| Graded slabs | Each slab in a bubble sleeve or small box, packed snug in a larger box | Signature on delivery for high value; photograph everything first |
| Bulk base cards | Counted stacks in team bags inside a snug box | Weight adds up fast: check against your label's cap |
A graded card in a slab is already in a hard case, but the slab itself can crack and the label can scratch. Wrap each slab in a small bubble sleeve or a piece of bubble wrap, then pack the slabs upright and snug in a box with no room to shift. Do not stack heavy items on top of slabs. For high-value slabs, require a signature on delivery and photograph the slab, the packaging, and the sealed box: if a claim ever happens, that photo sequence is your evidence.
Do not, if the card matters. A plain envelope with a stamp goes through high-speed sorting equipment that bends, and an unprotected card arrives creased. There is a companion guide on mailing trading cards in an envelope for the rare cases where it makes sense, but the rule is simple: if the card has any value to you or the buyer, it ships as a parcel with the full protection stack. A small parcel under 5 kg staying in Canada fits a LetterAgent Xpresspost label nicely: ask your AI assistant, approve the exact quoted price, pay once through Stripe, and get the label PDF.
Ready to ship it? Get a shipping label with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and get your label.
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