Mis-marked as 20 Ct Gillette "Blue Blade" dispenser w/"Speed-pak" notation and Z-1 blades. NOTE: Case is only 10 Ct size. The first "Speed-pak" w/ introduced (US) 1947 w/only 10 count & cream color. The 20 Ct dispenser w/later introduced in (US) 1949 (case all blue) but no "Speed-pak" designation.
