Thanks again to all the people who are helping me out here.
I am only asking because I have sold so many things over the years (hi-fi, guns, books, lathes etc) only to find out (sometimes very quickly) that I have asked too little and have done myself. So I thought I would ask the experts on here.
I am profoundly grateful for all your help.
To answer your question Vic, I would be happy to sell the box for £45 plus postage. Obviously after lockdown, collection could be arranged instead.