If your MINI's been assigned a VIN and finished production, go to this site and enter the last 7 of your VIN BMW Model Archive · BMW VIN Decoder · bmwarchive.org It provides your MINI's birth date, exterior and interior images, and an item by item listing of your MINI's options with assigned codes. Pretty cool. Below are images of my '14 S Roadster before installation of the chrome driving lamps:
As I recall, you can go back for years, if not decades, to track your MINI's history on the BMW website. Pretty cool indeed.
The date you get on bmwarchive, is it the date the car was completed or the date they started assembly?