The original British version and a
later American (Spirti) version
Note that the only difference is in
the shape of the Head unit. There is yet another version which
I had forgotten about till looking through my data. Marked with
D.E.P. Co. and thought to be of Canadian manufacture, I
have yet to track down any hard information on this one.
Yet again a slightly different Head Assembly. Even tighter corners compared to the British Version.
Many thanks to Johannes M. Vogt for the above photos.
I think taken at the AERO SPACE MUSEUM CALGARY ALBERTA
to Astro Mk II