This is is a new old stock head gasket manufactured by Clough and Wood part number DHG855.
Thickness is 1.25 mm
Applications in the 2000 C&W catalogue are
BEDFORD
Astra 1.5 D (4EC1 eng) 1989 on
Astra 1.5 TD (4EC1T eng) 1989 on
Combo 1.5T D (4EC1T eng) 1993 on
ISUZU
Gemini 1.5 D (4EC1 eng) 1987 on
Gemini 1.5 TD (4EC1T eng) 1988 on
VAUXHALL
Astra 1.5 D (4EC1 eng) 1989 on
Astra 1.5 TD (4EC1T eng) 1989 on
Corsa 1.5 D (4EC1 eng) 1987 on
Corsa 1.5 TD (4EC1T eng) 1988 on