$20 Block of Four 1998 NPA Folio (Red Serial)

Secure this premium $20 block of four from 1998, housed in an NPA folio featuring the sought-after red serial variant. Red serials from this late 1990s production run represent a specific printing specification with limited market availability, commanding strong collector interest among numismatists pursuing variant documentation. The block presentation preserves original configuration while the Note Printing Australia folio provides institutional authentication and museum-standard preservation. The 1998 $20 denomination marks a significant point within Australian currency evolution, and acquiring a red serial block substantially enhances collection credentials. Ideal for collectors specialising in 1990s currency variants, those building comprehensive $20 series documentation, or advanced numismatists seeking authenticated examples with verified provenance and professional institutional curation from this important production year.