MCR1 "Biscuit Tin Radio" radio receiver, 1943-1944. MCR stands for Miniature Communications Receiver. These radios were dropped by parachute into occupied territory packed in Huntley & Palmer biscuit tins. During WWII being caught using it in German occupied territory would have resulted in execution. More than 30,000 were manufactured.

It could be operated by mains electricity or dry battery. Includes the main communcations receiver with separate power supply unit and four plug-in coils for different wavebands. It can operate from a variety of voltages. It uses a low profile aerial.