FORENSIC CUSTODY & AUTHENTICITY SPECIFICATION
Every collectible admitted to Card Crest vault holdings is backed by our lifetime forensic authenticity guarantee. If any slab purchased through Card Crest is ever proven counterfeit or altered by an authorized grading authority, we provide a 100% immediate buyout guarantee including transit costs.
Optical UV-Reflectance Spectrometry
Every slab admitted into Card Crest vault custody undergoes optical spectrometry under 365nm UV400 multi-spectral illumination. This laboratory-grade analysis measures pigment fluorescence, cardstock chemical composition, surface gloss varnish consistency, and rosette halftone screen printing angles against manufacturer reference standards (Wizards of the Coast, Nintendo, Topps, Panini, Upper Deck).
Ultrasonic Sonic-Weld Acoustic Seal Inspection
Secondary-market bad actors frequently attempt "slab cracking" — opening genuine PSA, BGS, or CGC holders to swap mint specimens with damaged or altered cards before resealing with adhesive. Card Crest inspects all four perimeter weld seams using ultrasonic acoustic scanning and high-magnification polarized microscopy to confirm factory hermetic seal integrity.
Any evidence of micro-fractures, edge frosting abnormalities, uneven refusion lines, or non-factory cyanoacrylate adhesive residue results in immediate specimen rejection and blacklisting.
The 3-Stage Vault Custody Pipeline
Our custody chain guarantees that high-value specimens never transition through unmonitored or unverified intermediate points:
Every certificate number is validated directly against the grading agency's live cryptographic database (PSA Cert Database, Beckett Verification, CGC Population Registry). Centering data, certification dates, and high-res census images are cross-checked.
Perimeter ultrasonic seal test, 365nm UV luminescence scan, and digital micrometer case thickness measurement to detect altered dimensions or re-cased specimens.
Upon acquisition, cards are vacuum-sealed in static-dissipative archival pouches, seated within high-density foam-lined crushproof containers, and dispatched with 100% bonded transit insurance requiring adult signature.
Archival UV-Chamber Vaulting & Climate Stabilization
Prior to dispatch, all catalogued specimens reside within our proprietary environmental vault chambers engineered to ISO 18911 archival preservation parameters:
- Thermal Stabilization: Regulated continuously at 68°F (±0.5°F) to prevent thermal expansion/contraction of polymer grading slabs.
- Relative Humidity Control: Maintained at 45% (±2% RH) with dual-redundant industrial desiccators to prevent foil curling, surface oxidation, or cardstock warping.
- UV400 Solar Protection: Museum-grade 99.2% UV-absorptive cast acrylic chambers eliminate photochemical fading and ink degradation.
- Gaseous Contaminant Scrubbing: HEPA-14 particulate filtration and activated carbon chemical adsorption remove sulfur dioxide and airborne acidic VOCs.