Ingressus angelus ad Mariam dixit

Source: 
Sankt Gallen, Stiftsbibliothek, 388
Folio: 
138
Sequence: 
12
Feast: 
Annuntiatio Mariae
Office/Mass: 
V
Genre: 
A
Position: 
M
Cantus ID: 
003339
Mode: 
?
Differentia: 
?
Manuscript Reading Full Text (standardized spelling): 
Ingressus angelus ad Mariam dixit ave Maria gratia plena dominus tecum
Manuscript Reading Full Text (MS spelling): 
Ingressus angelus ad mariam dixit ave maria gratia plena dominus tecum
Indexing notes: 
"Ab" differentia erased? mode 1 not found elsewhere for this chant -- music not the same as following version of this chant on this folio side;