Great candid shot! The Speedy appears to be a true transitional or a '68 (please correct me if I'm wrong), but which motor is that?
Headed to the field today. The book in the background is a college text written in 1884 (my copy is a 1898 printing) and is still 90% relevant to the contemporary study of Geology.
I went to my local AD, requesting this bracelet for my Mark 4.5, and she told me it wouldn't work. Guess she was wrong!