Alpha
Finally getting around to perusing my copy of “Typefoundries in the Netherlands” and really dug the lowercase alpha from a face called Long Primer Greek No. 590, so I did a quick tracing for shits & giggles.
From the book:
“[This typeface’s] sixteenth-century date is well attested, for it is found in Plantin’s edition of the Hymns, Epigrams, and Fragments of Callimachus, printed at Leyden in 1584. … The matrices came from the [Egenolff-Berner later] Luther Foundry in Frankfurt. It is not impossible that this beautiful face was cut by Jacques Sabon. It can be seen in many Dutch books of the seventeenth century, and it associated with the typefoundries of Blaeu and Daniel Elsevier.”
tl;dr – Really pretty Greek typeface that may or may not have been cut by Sabon.