They definitely haven't rubbed off. The digits are stamped into the side wall and the tyres have never been used.
I have no idea why there aren't more numbers.
The front bar will fit 90 / 110 / 127 / Defender.
The rear is for a quad tech box on a 130 so would be no good for any standard backs.
That obviously makes the front light bar far more sought after.
Feel free to buy both :)
I have no idea of date of manufacture. Does it say somewhere on the tyre?
I have no problem with you sending a courier. They could pick up the Steering Guard at the same time! :)