Yes definitely OF1417's. Distinctive engine noise and higher
floorboard than the B57's. And the merc logo on the radiator for
confirmation. And some of their license plates, as far as I can
remember, are:
SBS 1632 X
SBS 5574 D
SBS 5576 Z
SBS 5577 X
SBS 5583 G
They were leased to TIBS for normal route duties and considered
part of TIB's operational fleet during the period of lease so
obviously they were driven by TIBS drivers themselves.
They were used mostly in Sembawang and Yishun services as
substitute buses. 169, 167, 800, 801, 802, 803 etc. They could only
be used in these services because TIBS only printed the desto
plates for these services specially for use on the OF1417's.
I have MSN but i cant use it in office. I will add you later
on.