These are now in full working order, I have replaced the surrounds on the 8" bass drivers.  When I got these one speaker had it's original tweeter (sadly open circuit) and the other had been replaced with a cheap "sound lab" one.  I have fitted good quality Vifa tweeters.  These sound great with good bass output and throw a big wide soundstage with the upward firing bass driver, I can include the original failed tweeter.  The speaker cabinets have been carefully sanded and re-oiled and now look great.  The grilles are there but a couple are cracked in a few places.  Collection welcome from Sheffield S26.