DN — Malli 19 (Gen 1)

GCA: Standard Production Matrix - First-Run Pistol Prefixes Shipped USA | Source sheet also lists an import date of 1988-05-01 for this prefix/model (source: GCA) -- GCA: Standard Production Matrix - First-Run Pistol Prefixes Shipped USA. Only the earlier date is stored as this Batch's us_import_date; both are preserved here since the schema allows only one import date per prefix+model.