Sampi: the ancient Greek letter and numeral
Sampi (also Disigma) was an archaic Greek letter used in some dialects and later a numeral for 900. This article summarizes its forms, sounds, history, decline, and the questions scholars still debate.
Overview
Sampi, sometimes called Disigma, is an archaic sign of the Greek writing tradition that survived longest as a numeral. It appeared in a handful of Greek dialects in the early first millennium BCE, then fell out of ordinary alphabetic use. Despite its disappearance as a consonant letter, sampi continued to represent the value 900 in the classical Greek numeral system and remains visible in inscriptions and later manuscripts. Greek alphabet and epigraphic studies often discuss it when tracing regional variants and numeral practice.
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Names, shapes and evolution
The sign has borne several names: sampi, disigma, and in some sources it is linked to the older local letter san. Its graphic form changed significantly over time and place. Early monumental shapes were angular; later cursive medieval forms became looped and compact. Examples of recorded shapes include 
Sound value and regional usage
In the dialects where it functioned as a consonant, sampi probably represented an affricate or cluster such as "ts" or "tch". It appears in inscriptions from western Anatolia and some Aegean communities where local phonology required an extra symbol beyond the standard 24-letter mainland alphabet. Its use was not universal: many regions continued to write those sounds as consonant clusters or used other letters instead.
Numeric role and retirement
When the Ionic alphabet became dominant and the standard 24-letter order was established, sampi as a spoken letter disappeared. However, the letter lived on as a numeral, assigned the value 900 in the alphabetic number system used throughout antiquity and the Byzantine period. This numeric survival preserved the character in scribal repertoires long after it ceased to appear in ordinary words. See also discussions of Greek numerals.
Origins and scholarly debate
The origin of sampi is debated. Some scholars propose it developed from a local innovation to represent a sound not covered by other letters; others suggest influences from Semitic scripts (for example, letters used to denote sibilants or affricates), though direct derivation is uncertain. The relationship to the name san and whether sampi supplanted or coexisted with san in particular cities are topics of ongoing research in epigraphy and historical phonology.
Notable facts and legacy
- Sampi demonstrates how alphabets adapt to regional speech needs and how obsolete letters may survive as numerals.
- Its many graphic versions make it a useful marker for dating inscriptions and manuscripts.
- Although uncommon in modern typefaces, sampi appears in catalogs of ancient Greek glyphs and in studies of numeral notation.
Source
The origin of sampi is unclear. It could have originated either directly or as a further development of the archaic Greek letter San (Ϻ) from the Phoenician Sade ( 
). The sade in Phoenician denoted the emphatic s sound. The San was derived from the Sade and was used in some variants of the Greek alphabet instead of the Sigma for the /s/ sound.
However, the Sampi is not placed in the alphabetical order at the position of the Sade or San between Pi and Qoppa, but is at the very end after Omega. This would rather indicate that the Sampi was a later neologism.
The name Sampi is also not sufficiently clarified. It could be related to the name San. Another possibility is that it goes back to ὡσὰν πῖ hōsàn pî "like Pi" and refers to the external similarity between Sampi and Pi.
Use as letter
In some alphabets of Ionia (Teos, Ephesus, Kyzikos and Halikarnassos) and Pamphylia (Perge, Sillyon) a special letter with the form
resp. 
occurs. This is probably the forerunner of the Sampi. This character is found in the 6th to 5th century B.C. in Ionic and in the 4th to 2nd century B.C. in Pamphylian inscriptions and is found in places where most dialects have σσ (ss) and classical Attic has ττ (tt), e.g. ΘΑΛΑ Α instead of ΘΑΛΑΣΣΑ (thálassa) or ΘΑΛΑΤΤΑ (thálatta). How this combination of letters was pronounced in antiquity is disputed. However, since it goes back linguistically historically to *kj, the pronunciation variant /ts/ seems possible. The fact that the sampi was later replaced by σσ could then indicate that the pronunciation had changed from /ts/ to /ss/.
Related articles
Author
AlegsaOnline.com Sampi: the ancient Greek letter and numeral Leandro Alegsa
URL: https://en.alegsaonline.com/art/86709