Hi Mick, thanks for the post - I wonder if this is a slightly earlier variant from Denley, as it is definitely solid [soft] wood rather than ply. WRT the C6 neck, I agree that at present there are not enough rods to get the full Emmons copedent. However, it looks like pedals 4, 5 and 6 operate the equivalent of Emmons pedals 5, 6, and 7. There is a spare rod and knurled connector in the case which could probably be put to good use! Pedal 4 also raises the top F# to G# on the E9 neck at present...
I would be interested to know what the original tunings and copedents were (or should have been!) - I cannot imagine the guitar has remained unaltered all its life, and certainly when I bought it, the copedent wasn't quite the same as the standard E9, hence I played around with it a bit to get it more consistent with other guitars.
Anyway, it is pretty sturdy as you say - the castings see of particularly good quality compared with many other instruments of this era (not necessarily pedal steels). I think the fretboards are brass, which seems quite a strange choice as the costs must have been masses higher than for simple sheet steel or aluminium.
There is what I believe is the serial number, 157, stamped into the wooden frame underneath the guitar. I wonder what happened to the other 156+ guitars that were presumably made
Any additional information from anyone would be gratefully received. Even more so if wrapped in £500 in used notes in exchange for the guitar!
Thanks for looking,
Sid
But I've got to to say how much I enjoyed Richard's post 
Superb
