Clinton,
CFS = Civil Flying Services
All four CFS Bonanzas I flew in the period 1966-1970 had three-bladed props; CFB (an S35), CFC, CFH & CFK (V35's). An oddity, since the 8 Barons (an A55, B55's & C55's) there then all had 2-bladed props!
There also was CFV (another V35) lurking around at Moorabbin, but I never even saw this one nor can I locate any photos.
S35 VH-CFB at Parafield in 1965, before the blue airframe/yellow tail madness took hold..
V35 VH-CFH at Warracknabeal in 1967; not me flying but I was married to the lady in the RH seat for many years!
V35 VH-CFC at Jandakot, 1969.
They're all Geoff Goodall photos, btw.