9.B.1
I-TLp
Museo Villa Puccini, Torre del Lago/Lucca
1 leaf, 4° with 12 staves, 23 bars. At the upper margin of the recto, written in a different hand, are the annotations 'P' and 'X'."
Formerly in private collection of the Della Nina family, Chicago.
No. 1 in Bernardoni 2017a , p. 98, including a transcription of the first 6 and a half bars of the source.