Thanks. I remember I corrected them. I must have made some mistake when I exported the png files. I’ll fix the issues when I have the opportunity.
The similar shape of the letters υ and ν is due to the Sans font provided by the Gimp, which I used to compose the text. Anyway, it should be fixed on archive.org and also on Lulu.
υ and ν do look very similar - if my Greek was better I would have probably seen what I knew ought to be there rather than what actually was. However, my version of Gimp allows you to insert text layers using utf8. You might check that that isn’t possible for you.
(I use Linux so if you use Windows that might be a Windows issue)