Hi Paul, i have a Raymond set here in my collection, there does seem to be a few manufacturers involved i guess, parts not so obtainable, after all its only 2 years after the war. Thanks for your interesting reply, i have just found this link below for a derwent, its very very near...regards...Alan.
http://www.radiomuseum.org/r/central_derwent.html
http://www.radiomuseum.org/r/central_derwent.html






