It is re-assuring that the threads on the DIN outlet are checked; it would not be good to have a newly tested cylinder with an inferior DIN outlet.

Out of interest did the test centre confirm that the cylinder had been passed the inspection, checks and hydraulic pressure test?

I ask because the IDEST Information Leaflet (SITA/Information Leaflets/Testing Dive Cylinders) states that the valve has to be checked/serviced and the bottled checked/pressure tested. Just wondering if some test centres delay the pressure test until any corrective action to the valve has been agreed with customer. The information leaflet states that when the valve/cylinder are assembled, the cylinder can be stamped up. If they were to return the cylinder only, it may not be stamped (even if tested); which may be prudent as it might subsequently suffer moisture ingress/corrosion if not fully sealed. Just a thought.