In isto loco promissio vera

Source: 
Stuttgart, Württembergische Landesbibliothek, HB.I.55
Marginalia: 
4
Folio: 
032r
Sequence: 
8
Feast: 
Fabiani, Sebastiani
Office/Mass: 
N
Genre: 
A
Cantus ID: 
003247
Mode: 
1
Differentia: 
a
Differentia database: 
1--h-h-hg-gf-gh-gg--4 66iii
Extra: 
?