After searching the internet for nearly two months, I can't believe the earliest prefix for a P500 I've found is "L", I've seen none with a prefix in the A - K range...Where have they gone? Were they ever printed?
"A" prefix's for all denominations are easy to find, except for the P20 and P500. I did find a P20 (A123456), it cost me a heap of money and I've seen no other P20's before "E" or ANY P500's at all. I can understand the P20's A - D prefix's going straight into circulation, but with the P500's it's 11 million notes that haven't surfaced yet.
Now for the begging part of this post.... If there is any kind warmhearted person who has a spare P500 "A" prefix and can sell it to me, I can offer a large amout of money and I'll even consider your name for my second born. (If you do have an "A" for sale please send me a PM)