As above, they are probably the Porsche Boxster Brembo Calipers, known on here as the NQSBBK.
Looks like this (below). Either with Porsche or Brembo decals on. The part numbers for the front Calipers (if they are the ones you've got) are stamped into the Calipers. The part numbers are 986 351 421 and 986 351 422
First three are the model number 986 = Boxster
351 = Front brakes
421 Left Caliper (odd numbers) & 422 Right Caliper (Even numbers)