Sugg No 2 burners and mantles

Two Sugg ceramic gas burners and associated mantles for use in gas streetlights.
The burners themselves are very hard to come by but there are still people making the mantles. I imported these mantles from Germany.
These mantles are non-thoriated so there is no risk of breathing in radioactive dust if the mantle breaks!
Note the gauze "swirler" in the neck of the burner to help mix the fuel and air mixture before combustion.