This is an original 4mm-scale "Nimbus" card model bus "kit" (card size approx 6" x 8") produced by Alphagraphix in 1993. Numbered DB94, it features Ipswich Buses 221 (G221VDX "Dione"), a 1989 Optare Metrorider with blind set for route 1. It's a "cut out and fold" model which needs to be glued together; the finished item measures approx 4¼" long x 1½" high x 1¼" wide.