Hi Thumper, lovely photos of a nice Radius stove. You have it running well with a borrowed silent burner,. The stove itself is marked "Radius" rather than "Radius Ltd" indicating that it was probably built before 1939/40. I think your stove probably dates from the mid 1930s since slightly earlier models had "Mickey Mouse" filler caps, whereas yours has a more modern form. Best Regards, Kerophile.