Early bays are low lights..... Late bays have the indicators high up next to the grille. Late bays also have bigger air intake vents on the rear 1/4s and bigger rear lights.
You could always de-code the M-plate and that should tell you exactly what it is/should be
I've got a 'K' reg. which is a crossover. Can't see the rear lights, but got a gut feeling it's a crossover. You'll dig deeper and deeper now for information and get keen on all things volkswagen bay. Welcome to the world of pleasure and pain . Pleasure far outweighs the pain though.
Earlybay then. There are guys and girls on this site who are absolute experts. You'll get a full explanation and insight soon enough. Welcome to the site.