It is easy to confuse mechanism with quality.
A non ejector can be made to best quality, and they were.
There is no list to which one can refer to determine what features a best gun of a particular type would or would not have in order to be of the best quality.
One has to look at the gun and judge it on its merits.
Some makers added intercepting sears to mechanisms, others did not. In some (like many Alex Martin boxlocks) they were added (many would consider them an over-complication and of dubious benefit), in others (like H&H 'Climax' models, intecepting safety bolts were used in lower quality guns).
It was certainly possible to take the basic A&D action and make it to the highest quality. That is what the Harkoms are, though they too have their refinements, like the double dog cocking limb and gold-washed internals.
Most Harkom boxlocks of this era have Deeley box ejectors.
