Bear with me on this...
Many moons ago...Friends of my father took their Rolls Royce to southern Spain to do some touring. Unfortunately the differential seized and the car got towed to a small Spanish hamlet. After several phone calls, RR sent a mechanic with a replacement differential across the channel to fix the car. With the help of some local mechanics the job got done in short order.
They continued their road trip without any further drama, but were not looking forward to the repair bill after their return to London.
Weeks passed...still no invoice so they called RR. Their response?
"I'm sorry Sir, there will be no invoice: Rolls Royce differentials simply don't seize-up"
I suspect Leica are equally proud
