Well!
Zero comment on my 4 CLY badge, a couple of posts back.
Does this mean it is not worthy, as a fake, or nobody knows or has an opinion?
A close study of the badge with a glass shows a witness mark, indicated below, that I think is where a white metal 'CLY' (3 CLY) has been removed and a '4' substituted.
This could be a 3 CLY 1939-44 pattern badge that has been modified and fits well with the dearth of genuine production 4 CLY hat badges in the field, discussed on this forum, and witness the number of substitutes - collars, fancy '4' variants etc.
PeterA