A design proto for another car/version perhaps?
I'll check the tool kit in my Insignia later this week, don't think I have ever even opened it...
i see where you are going, but i have two of these in my possession , and RJ knew of another , so not a one off prototype in my opinion ,
the only hint is the very last XJ40's which could include the insignia , and the last XJS also had the same style tool kit fitted, so again , possibly for the insignia versions, or maybe even the ' Majestic ' xj40's ?? no other car models were in production at the time of this early 1990's tool kit......?
one possibility has been eliminated, and that was for XJR or XJR-s , as these have ' normal ' tool kits if any at all, as they were optional extras