georgd
ȣ LATIN SMALL LETTER OU (U+0223) missing
I think there are some more ligatures in the Greek portion of the specimen, but they're harder to decipher.
Oh well :). The Latin small ou is indeed missing and should be part of completing the Latin and IPA sets. But it shouldn’t help you in this case, I fear. There are two encodings in Unicode for ou derived from the original Greek ligature, one for its use in Latin script (I think mostly in northern American languages, IIRC) and one for use in Cyrillic (mostly ecclesiastical). But the original Greek one has no separate encoding.
What you see here are the famous “Grecs du Roi”, a masterpiece in their own right by Claude Garamont. It was modelled on contemporary handwriting and comes with loads of ligatures—the specimen shows only few of them. I have to confess that the whole set is out of scope for me and, like you, I have difficulties deciphering them. There’s a freely available digitisation, however. If I remember which one it was I’ll let you know.
I might, however make an exception for the omikron upsilon ligature as this has wider use.
Another font that has historical Greek ligatures (though these are poorly documented) is Theano Old Style.
