Hello and thanks,
There is a clear dot between B and MARC but I suspect this is of no consequence. Yes I misread the nitro cellulose mark as I was looking at a picture of the round which is at present in the post! I really should know better, my excuse is that I have gone deaf, yes really, and a bit disorionated, waiting for treatment on Wednesday, it's a nuisance as I cant even get out on my trike because I can't hear the other traffic, and can't listen to music or even worse, the Archers!
Thanks again for your help,
Very best,
Guy.