painauchocolat, I see you're in the UK, so I can confirm that's the Part Time, which comes with a leather tag. I can further clarify that (for reasons beyong my comprehension) they call the Part Time "City" in the UK, and when pressed, they'll say "It's the City, but larger, but not as large as the Work/Office."
Apparently the name "Part Time" name was not introduced or used in the UK. I learned this the hard way when I was ordering my Special Edition Antique Gold, which the Selfridges SA kept telling me was the City, but then kept describing the Part Time. Every time I said that it must be the Part Time, he had no idea what I was talking about and said he'd never heard of Part Time.