They weren't the 'originals' but were purchased around 1990/91 when you could still buy them new. The car's only done 53k miles so they don't see much action which is why they've lasted so long, but I thought as I'd just had all the wheels refurbed, I'd stick some new ones on.
Annoyingly, Dunlop don't make tyres in 205/50/15 anymore so had to replace them with Continentals