Royal Bank of Scotland GBP20 TDLR printer A/1 Specimen Banknote

One of my favourite collection piece. A 1987 Royal bank of Scotland TDLR Specimen GBP20. Cost me a fortune to possess this masterpiece but to me i feel it is well worth it.

This note would be a complement to my GBP 10 specimen set. Too bad i didnt come across the normal specimen with A/1 prefix.