I’d search for the two codes under the TPA or go onto TPA website as there doesn’t appear to be another type code as there is on mine. Also mine is a different EN number.I have another one which came from a small BBQ. That one is all bare metal and looks exactly as yours does from underneath. My red ones seem to have a fixing system almost identical with the blue Calor reg. The only real difference is the height of the central valve/gas release. The Calor one protrudes further but beyond that they are very alike.
My all bare metal one is far closer to yours in that the mechanism for retaining it on the bottle seems to be an internal movable grip thingy! (Yours shines and like mine seems to have a sharp edge)
Hoping now that I don't have three different regs!
27mm (one on right) is Patio Gas or Gaslight cylinders