That's quite an old image.... Jook Leong has been making them for years, he is very good at it... I think it was done with a Kaidan head and then stitched with Helmut Dersch's original panotools, which was a pig to use back then. It is still an excellent stitcher and is the basis for thee now popular PTGui.
http://www.panotools.org/dersch/
There is some interesting history about the licensing of Dersch's work, the link above gives some background and links to some other impressive imaging...
If the lens is a good one, and it is mounted in an indexing head with the nodal point correctly calculated, then a spherical panorama in a phone box is quite achievable...
Best
Hugh