Thanks Bruce.
That's quite handy, particularly confirmation that the Carrera 30s replace the Carrera 45s, rather than being concurrent - I had assumed this was the case, but hadn't seen it in black-and-white.
Does your reference agree with mine on the introduction date for the 73xxx manuals in the same case as the 1153? Mine has 1970 across the board for all four model numbers (73353, 73453, 73653, 73655) - is yours any more specific?
I did think about the "Skipperera" but it kind of sits by itself before veering off into the Autavia's family tree, inheriting DNA from all over... so I decided to leave it off in the end!