I remember this one now. Spray can black finish with 26 instead of 27 inch wheels ? It is an interesting frame and worth the time to establish whether is is a 'true' Grubb or a Holdsworth. The attached images show adverts from 'Cycling' - one from Jan 1952 - the other from Sept 1952. Both offering Southern Cross frames. If it carries the Anerley SE20 headbadge (Small circular alloy) then it must be a Holdsworth made Grubb albeit a very early one. If it has something different, let's see a picture and we can work from there