8

I came across this picture attached to a clickbaity article this morning:

partial abecedary

A nice, normal-looking Greek alphabet…except for something that looks like S in between epsilon and zeta.

What is this letter? The only letter that I can think of for that position is digamma, but I've never seen a digamma in that shape, only like F.

Draconis
  • 66,625
  • 6
  • 117
  • 269
  • This shape is used for terminal sigma, in contrast to medial; In my (Classical) Greek grammar it is shown for 6;in the Aldine Bible it is used with an extended top bar for monogram ts, (tau sigma); in greek alphabets it is often placed in the position previously occupied by digamma.This is all a preamble to saying it has several names: sigma, terminal sigma, tsau, tsigma, stigma, hex, and digamma. – Hugh Jan 18 '19 at 02:15

2 Answers2

12

I'd guess it's the symbol for 6, originally digamma, but later taking on an S-like shape. (It's a bit hard to make out, but I think the last two cells contain ΙΑ and ΙΒ, indicating a series of 1 to 12.)

varro
  • 4,688
  • 1
  • 9
  • 17
5

It is indeed one of the forms of Digamma, the form particularly used as a numeral. See Here

Colin Fine
  • 646
  • 4
  • 8