I haven't
yet decoded the tape (if it says anyhthing at all). Luckily I
just got _Computers and Typesetting_ which covers plenty of obscure
typesetting codes (which is the only area I know of in which six-hole tape
ever became popular).
Check out BAUDOT code used for the old mod 15 teleprinters and
reperforators.
those were 5level code with a shift character. Commonly used for TTY
services
like Western Union and Hams.
I can clearly see that this is a 6-level tape, so Baudot wouldn't be the
answer. (I seem to recall, though, that some of the 6-level codes were
modified from Baudot, either using the extra hole in place of the shift
character or using it for marking capital or lower case letters. All caps
are fine for telegrams but not for book printing.)
-- Derek