These are the oldest cu's I've come across to date.
All circuits wired in Lead sheathed cable.
All circuits have the neutrals fused aswell as the phase.
Socket circuit cu.
http://i83.photobucket.com/albums/j293/gazjothomas/DSC00115.jpg
Lighting cu
http://i83.photobucket.com/albums/j293/gazjothomas/DSC00116.jpg
All circuits wired in Lead sheathed cable.
All circuits have the neutrals fused aswell as the phase.
Socket circuit cu.
http://i83.photobucket.com/albums/j293/gazjothomas/DSC00115.jpg
Lighting cu
http://i83.photobucket.com/albums/j293/gazjothomas/DSC00116.jpg