Hills End

Adventure series. 6 ep
–Year: 1988
–Year in film: 1950s
–Country: Australia
–Who in bibs: boy, girl ~10
–Available on DVD: no
–I own: no
–Bib occurrence: low+ ??
–Rating:  6/10 ?
–Rating: ******
–Comment: At least one boy, maybe Clayton Williamson ("Touch the Sun: Peter & Pompey", teen girl, rating 4) in red bibs and a girl in blue shortalls.

By briefly checking some pics/entries on tv-kult.de, I found this by coincidence.

Obviously very rare and I only have seen some brief clips and pics. Wearing red bibs in the 1950s is also rare, especially for a boy.

7 kids, adventure and cave reminds me of Enid Blyton.

Rating 6 for now. I assume rather few bibs scenes.