I am wondering how rare an AOC's commendation is, and what type of award it is.

I have seen the following: "For meritorious service and good airmanship in that a full operational tour has been completed without having been involved in any accident or ever having an unnecessary cancellation or abandonment of an operational sortie" stuck within a logbook holding an approved signature of the relevant Air Vice Marshall to the Squadron.

Clearly it sits below an MID, but is it recognised as an award.