Stumbled across this frame over the weekend.Has track rear ends and track fork blades ( 22mm round ) although they have been swaged on the inside face.Swirly lug work and interesting treatment on the fork crown where the top edge has been filled with a small round file at 45 degrees to create small grooves.Front dropouts are oversize and rear stays finished in the fastback style.Bike has been set up to ride on the road with gears but has steel cotered cranks so that may indicate its age. Any ideas on who Dale Brun may have been and the origins of this bike, Geoff Duke in Wintery wet Melbourne Australia