Hi Harry,
Very interesting your item regarding Anshin.
I think you are right: it is not a Japanese tampon.
In the U.K. Robinson made them (also the makers of Nikini). They were
called Cameo tampons. See an ad in the Woman's Mirror (May
22, 1965) [here].
The same tampon was sold in the Netherlands in 1972 by Unicura; see
the scans of the instructions (on one sheet 107 mm x 83 mm; if folded,
it has 4 pages). To market it, you could win in the "Ortex Goudfestijn"
(Ortex Goldfestival) gold objects. See some pages of the folder (it is
threefolded, 2 x 3 pages, I scanned 2x2 pages) [see
all below].
BTW: Unicura was the same company that sold Tassaway
menstrual cup in 1972/1973 [in Europe; see an ad].
But if the ads are an indication, after 1972 Ortex disappeared
from the market or had a very small part of it.
NB: I think the tampons are not made in Holland; the instructions on
it are written in English!!
So I think that Robinson tried to conquer the market in the U.K. but
didn't succeed (in the long term). Later, it exported it to Holland/Belgium
and Japan and maybe other countries as well.
I send you the scans as raw material to you.
