With the weather as good as it is this weekend I've been poking around in the luggage compartment of my '67. It still as the wax crayon marks on the bulkhead, but I can't work out what they mean. They bear no relation to the chasis number & from what I can see they are not anything to do with it's build date (2nd June 1967) or colour L633. Any ideas? they are: 76 - 20 then below that is 86, then below that is 129. Also to the right of that is another 86.