Problem is that anything that needs to be done professionally (other than measuring wall thicknesses and sucking in breath whilst raising eyebrows) is going to cost more than this box-lock non ejector is ever going to be worth.

If I am very lucky and the bores are not too horribly pitted, I can cope with cleaning and sympathetic re-finishing and perhaps occasional use (..410 inserts?).

As Ted observed at the moment I am not out much.

At least I do not have to worry about Greener ejectors, although surprisingly the ones on my J.V . Needham BLE still work after 130 years!