Puer Jesus proficiebat aetate et

Folio: 
029r
Sequence: 
4
Office/Mass: 
X
Genre: 
A
Cantus ID: 
004410
Mode: 
6
Differentia-Old: 
H
Manuscript Reading Full Text (standardized spelling): 
Puer Jesus proficiebat aetate et sapienti coram deo et hominibus
Manuscript Reading Full Text (MS spelling): 
Puer ihc proficiebat etate et sapienti coram deo et hominibus
Indexing notes: 
is this the Magnificat antiphon?