Salvete!
From my greeting it should be clear that I belong to the Latin persuasion. However, I have a somewhat esoteric question which deals with the early Greek alphabet.
I am currently putting the finishing touches to a transcription of Anthony Rich’s Illustrated companion to the Latin dictionary, and Greek lexicon, which explains Latin headwords (dealing mostly with the visible world) in English to help in understanding Latin texts. Now, one article (arcus, see this Archive.org-scan of the respective page) contains in the last line of the left column two early Greek variants of the letter Sigma.
Now the earliest character used to express the Greek Sigma was written thus ___, or thus ___, as shown by the Sigean marbles, a monument of very high antiquity (Chishul. Inscr. Sig. p. 4. and 41.), and not like the letter C, which is a more modern form.
I need to be able to print these characters in the digital editions (there will be a static HTML-one and an expandable Wiki-version). I have (my own) scans of the book and could simply use image-versions of these characters. But I was wondering, whether there exist unicode- or vector-based versions (in the public domain) of these early variants. I checked the en.wikipedia-article about the Greek alphabet but came up empty.
Can anyone help me?
Valete,
Carolus Raeticus