This is a vintage Dexter mat cutter from Russel Harrington. It comes with the instruction booklet, 3 pieces of #3 blades wrapped in paper, and 1 rusty used blade, all in the box. The cutter has patent # 2924010. The instruction booklet has a price for the cutter of $5.95, and the back corner is marked "MC 601" and "6 64." Made in the USA.
The cutter is in good shiny condition. The instruction booklet is creased and with light edge wear. The box is soiled & worn on the corners. The 3 new blades are connected to each other, am not sure if that's how they originally came or from age.