Snap it up.
It is indeed a MK IIC GR (compact), although the hypalon looks a little weathered. Boat should have inter-communicating valves. Not sure if Zodiac ever fitted over-release pressure valves. I wasn't sure they ever made a compact version. Pretty sure it's not 5 years old, as the serial number on transom indicates its 2008. Someone can correct me if I'm wrong?
Made in Spain. MK II CGR is part of Zodiac MilPro, hypalon, etc. Looks like it's missing it's external grab handles. You can always retro-fit. On MKII it had 4 carry handles and compact version, certainly on leisure side, had just 2. To be honest it looks like 4.2m. Just get seller to confirm.
https://zodiacmilpro.com/work-boats/
MKII data sheet attached.