Grant,
Obviously it is difficult to see from the photograph and the 'fine point' is a main 'tell' between a Nutshell and a Raleigh. Hopefully yours will turn out to be a Nutshell - the more the merrier - when we met (at a Minor rally) Bruce did mention one of the Scottish 'four' was needing a complete rebuild.
Internally there are other differences in the base - principally the access into front locker in a Nutshell is through neatly cut ovals in a sloping plywood panel whereas the Raleigh is a very basic opening with a single square leg in the middle.
The Nutshell front and rear 'detachable' end panels are identical and have a vertical bow when viewed side-on; the Raleigh towing end panels are linear - the front mounts vertically; the rear slopes inward and these are not interchangeable. Obviously the folding side panels are shaped to fit each type. In addition the windows are different sizes between the two makes. When erected these differences are visually really noticeable.
My Nutshell has the original L. Stewart & Sons makers plate on top of the towing stem - I suspect many have been lost but the rivet holes may still be present.
Originally the Nutshell had an integral wheel and hub arrangement which meant dismantling the bearing assembly on the roadside if you had a puncture - very messy and impractical for regular use. The Raleigh had separate hubs and three-hole rims so a puncture the tube (even tyre) could be changed roadside with comparative ease - I equipped my Nutshell with the latter as it saw regular use - a 'no brainer' decision.
At the time I did a lot of comparison work on the two types (I had one of each) and took many pictures although these currently reside on prints and negatives in one of several boxes unopened across two house moves. I cannot remember where my Raleigh went - I think it was to another Bond club member. A Nutshell (or Raleigh) will tow surprisingly well behind a Bond.
I remember your black Minor saloon and apologies for getting you into Bond Minicars!
The Scottish Microcar Club rallies were excellent as were the Bond 875 events.Ironically I now run a Traveller with a highly tuned A-series (oversized block /balanced engine /ported head /full-flow headers, overdrive transmission /centre-point clutch /vented disks etc) and whilst it has no problem towing the Nutshell (1) you can forget it is there and (2) the legal towing speed is tedious. However, I've toured Scotland in it including the Outer Hebrides and Orkney.
If you have any more photographs I might be able to assist further (currently my e-mail is playing up).
Kind regards,
C