The Collector Series for Glas Italia comprises five vitrines: two low glass tables and three taller glass cabinets.
Each is made from UV-bonded curved glass on black-stained solid-wood bases, with the internal horizontal surface clad in mirror or wood.
Barber and Osgerby designed the cabinets to showcase their own collections of random objects sourced from flea markets and overseas trips.
"One of the reasons we did the Collector Series is that we both now have such quantities of junk that we need something to put them in," Osgerby told Dezeen.
The transparent sides, tops and shelves allow the user to display their collections in a neutral environment, without the items becoming overshadowed by the material or style of the presentation case.
"I buy things just because they are interesting objects," said Barber. "I've bought lots of wooden bowls over the years. But then there are also those weird objects you find, sometimes you don't even know what they are, probably just a part of something else, but they look great."
Fully mirrored versions of the designs provide an option for more private collections.
The Collectors Series was launched at the Salone del Mobile furniture fair in Milan this April, where Glas Italia showed a range of new transparent furniture collections by high-profile designers including Patricia Urquiola and Tokujin Yoshioka.