As above. well let me list down!
1. It the only SBS55x 0405 that does not have voith gearbox (of course)
2. It was the only Merz to be perm on 51 in 2000 (of course lah wiki)
3. It was the best Merz 0405 to be praised by a Service174 driver in 2006 :)
4. It is the only SLBP merz to have the cleanest rims ever.. lol!