Well i'm either the coolest or saddist person here, and I don't think I have been cool for some forty years! On my F I have AR.II as its the smallest I could find to fit between the stripes. I also have AR-11 waiting to find a car also V AR 111 a euro style plate for the Laguna. The Midget has AWR 111 and on retention I have MG 0073, again retention O85O ( this was on the 850 Volvo until it was destroyed by fire, LEM, on wifes car MR 008,on retention 71-272 ( Historic plate weighs a ton ).
When I used to sell SAAB's my company car for years had SAAB or SAAB-1, we also had the number plate 1 and used to put it on a SAAB Convertable then use it as a prize, customers would have the use of the car for a week with that plate, in the end it was sold for a small fortune and now graces a Black AMG SL Benz.