This reminds me of something:
Jan/Feb 2003, before the B10TLs were out, there were several driver
familarisation sessions held at Toa Payoh Int (for 28, 31 and 143
(the 143 ones went 56 later)). 9810X was used fior driver
familarisation (parked at 90 berth) one day and it showed 143 on
its desto, but desto was outdated, 143 TEBAN GARDENS was shown.
