Ego signo crucis non clipeo

Source: 
Aachen (Aix-la-Chapelle), Domarchiv, G 20
Folio: 
334r
Sequence: 
6
Feast: 
Martini
Office/Mass: 
M
Genre: 
A
Position: 
1.3
Cantus ID: 
002587
Mode: 
7
Differentia: 
C1
Differentia database: 
1--l-l-m-l-k-jk--4 144a
Extra: 
122r