This is just my opinion and I defer to other CSL experts but here is my logic.Why do you think it's not a City Pack?
I inspected 2275027, a very close VIN, and it had GRP rear bumper, no front bumper, trunk prop without torsion bar, no trunk linings or toolkit, fixed rear quarter windows and other non-city pack features. I think chrome bumpers alone make this a city pack CSL. I am not a CSL expert however.
The term 'City Pack' refers to the 500 RHD CSL's that were exported to the UK and covers a specific VIN range 2 285 001 - 2 285 500 500.
While there are some variants as to precisely what was included in the 'Pack' it includes the following:
Glass rear screen and rear side windows;
Electric windows, including the rear where Euro spec CSL's had fixed windows;
Chrome front and rear bumpers;
This car obviously has some of these things but is outside the 'City Pack' VIN range and is obviously LHD. I also suspect some of the items mentioned in this thread are not factory fitted.
But as I said I'm new(ish) to the CSL game so happy to be proven wrong.