I don’t know if this can be of any help… but I sold my L-5 with a nice wooden Sensenich propeller… which had been changed years before by the last owner…
I have here left the metal propeller… it was working until offloaded…
SENSENICH CORP. P.C.NO.1 serial 11445K
MODEL 76EM8 -O-64
in anyone could use it… no papers are coming together.
ciao
maurizio