Pack against impact and bending

Protect the slab in a sleeve or team bag, sandwich it between rigid cardboard or in a fitted slab mailer, and immobilize it so it cannot slide. Use a sturdy box for valuable cards rather than a thin envelope.

Insure and track

For anything of real value, use tracked, signature-required shipping with carrier insurance matched to the card’s worth. Keep the receipt and tracking until delivery is confirmed.

Know the value you are shipping

Set the declared/insured amount to the card’s current market value, not a guess. Slabline’s per-card comp values give you the right number to insure the package for.