First of all, thanks for all the information that you have given. I went through the Holdsworth section, but was unable to find a pre - war Holdsworth.
I have checked serial numbers for Cluad-Butlers and Holdsworths. Pre-war Holdsworths stamped the serial numbers on the upper portion of the seat stay. 5698 would place the frame in 1939. A catalogue insert for a 39 Holdsworth Cyclone states that Chater lugs throughout, all expertly cut out...
I received this frame from a good friend. The frame is badged as a Ephgrave, but the steerer number and frame number do not have LE within the number. The serial number 5698 for the frame is located on the top of the seat stay.
Can anyone identify the frame ? I am going to respray the...