Creda storage heater thermal fuse link. 
Creda 0850656 Lead type fusible link for Creda night storage heaters.
158 deg C. Red spot.
Fits Creda 79131 79132 79134 79134N 79135 79135N 79141 79141C 79141H 79151 79152 79153 79154 79155 79331 79334 with early type bi-metallic thermostat