2 Extinguishers found stored away for 65 years -

Been kept in the dark, in heated & dry storage in the same loft room for near 65 years at my families old house.
A White Mather & Platt (Manchester) Simplex No.1 Circa 1930's
A Red, "The William Miller" (Glasgow) Patent Concussion Fire Extinteur. Marked 1933. Still full and unused and full of bicarbonate of soda!