I was thinking of doing a slight wheel rotation for evening out the tyre wear etc and had a close look at our spare - which still has the little rubber 'bobbles' on the tread - ie completely unused.
I checked the manufacturers date on it and it said 2404 so therefore it is the original Bridgestone Dueler 688 and manufactured in the middle of 2004

But then I realised that the previous owner had fitted 'Directional' Tyres so I could not really use one of them as a 'Spare'.
In the end I transposed the 2 N/S Tyres because the N/S Front Tyres was showing slight scrubbing on the outside whereas the rear N/S looked much better.
We do try to avoid using full lock on the steering but occasionally one has to LOL