Quem vidistis pastores dicite

Source: 
Praha (Prague), Národní knihovna České republiky (National Library), XIV.B.13
Folio: 
040v
Sequence: 
6
Feast: 
Hebd. Nat. Dom.
Office/Mass: 
L
Genre: 
A
Position: 
1B
Cantus ID: 
004455
Mode: 
2
Differentia: 
D2
Differentia database: 
1--f-f-f-e-cd-d--4 152c
Indexing notes: 
marked for "Laudes" - are these Benedictus antiphons?;