AO 68"
i still think it's an Amarco.
Catalogue that page came from doesn't have any decent pics & I don't have any earlier catalogues
to compare & it doesn't appear in '58 onwards.
If I could find it, there was someone on here or FB/TT/LW who had an Amarco set AYAS,
which included the same bow id AO 68 - if I/we could find that post it would give us a bow
to compare against - I've looked around a bit but not found it so far ;-)