In Holland that car would be worth it, trade in taxfree classics is lively, though at the moment Mercedes Benz is the buzz. In Pt, even cars from the '70 are priced on an as-is basis, and this is a perfectly usable car, with a bit of extra style, so it's worth it, too.
I have a 144 from 1969 and as far as I can compare, this one is complete and original. Someone put the accelerator to the floor quite hard.
This one:
http://agueda.olx.pt/volvo-144-s-200...l-iid-18235054
Rust is not an issue in Pt, this '67 has obviously been neglected for ages and is still solid:
http://torresvedras.olx.pt/volvo-144...o-iid-98107402