Updated Data Sheet for the Antarctic

 

Not seen one like this last addition - does anyone know anything about the model please?

Updated Diver Data Sheet

 A watch in pleasingly 'used' condition:

The vendors, Arthur Johnson & Sons, also provide an image of the movement:

Data Sheet for the Antarctic

Just noticed that I've neglected to establish, let alone update, a data sheet for the Antarctic model.

So here is a first version, including five examples where I have previously found an image but do not have to hand links to references which would provide text details of their specification/characteristics.  If anyone seeing this has any information - or knowledge of relevant sources - on any of these watches, I'd be very grateful to hear from them.