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Description
Every philatelist knows that a mint sheet's value lives in its condition — and these Heavy-Weight Archival Sleeves are engineered to preserve exactly that. Made from a dimensionally stable, plasticizer-free polyester film, they're completely free of stearates, chemical plasticizers, and PVC, so your U.S. Mint stamp sheets stay safe from off-gassing, chemical migration, and the slow degradation that ruins uncirculated sheets over time.
At 0.2mm thickness, these sleeves are noticeably heavier than standard stamp sleeves, giving mint sheets the rigidity they need to stay flat and uncreased in storage or transit. The fully transparent construction lets you verify perforations, plate numbers, and centering at a glance — no need to slide the sheet out and risk handling damage.
Sized specifically for large U.S. Mint stamp sheets and sold in a pack of 50, they're an easy way to bring archival-grade protection to your entire collection at once.
Specifications:
- Opening: Top open (long side)
- Film thickness: 0.2mm (heavy-weight)
- Dimensions: 11" x 9-1/2" (279mm x 241mm)
- Package Quantity: 50 sleeves per pack
Collector's Tip: Store your sleeved mint sheets in a stamp album or portfolio folder rather than flat-stacked — this reduces pressure on perforations and keeps sheets from curling over time.