This is a new old stock Unipart packaged condenser for some Opel models. The blister pack originally said GSC 213 but this has been changed to GSC 214, which we think means that this is a supersession from the earlier number.

It fits:

Opel Kadett 1.0 1.1 1.2 up to 1969

Opel kadett 1.0 1.1 1.2 1969 to 1972

Opel Olympia 1.1 August 1967 to 1970

If you have any questions please ask.