Missus est Gabriel angelus ad

Source: 
Vercelli, Biblioteca Capitolare, CLXX
Folio: 
121r
Sequence: 
5
Feast: 
Annuntiatio Mariae
Office/Mass: 
M
Genre: 
A
Position: 
3.3
Cantus ID: 
003794
Mode: 
8
Differentia: 
G1
Differentia database: 
1--k-k-j-k-h-g--4 118a
Manuscript Reading Full Text (standardized spelling): 
Missus est Gabriel angelus ad Mariam virginem desponsatam Joseph