REVO C13721S low-pressure sodium lantern. Similar to the C13723, the slightly smaller REVO C13721 was available as a top-entry or side-entry lantern, with or without integral control-gear, and was designed for use on minor roads and side street installations. The lantern never quite enjoyed the popularity of its bigger brother the C13723, but did see some widespread use in certain parts of the UK; odd examples can still be found in places such as Haselmere in Surrey and in the Swansea and Neath areas of South Wales.

The C13721S is pictured in acquired condition.

The example in the collection came from the Penn district of Wolverhampton and was the last of its type in the City. This lozenge-shaped lantern is very bulky in comparison to its modern counterparts, and being an integral control-gear fitted variant it's very heavy too. Like any survivors of the type, this lantern ended up using 35w SOX lamps.

Access to the interior of the lantern is made by releasing two toggle-action clips at the side of the lantern, allowing the plastic bowl to hinge down on its side-mounted hinges. Once the bowl is hinged open, the 'stepped' white-enamelled steel reflector plate on to which the lampholder is mounted on one side, and the control-gear on the back of it, can be removed by releasing four 'captive' screws in the plate. Once this is removed, access can be gained to the control-gear and the bracket mounting clamp.

With the bowl partially open the 'stepped' reflector plate can be clearly seen; the control-gear is mounted on top of the reflector. Sadly, the bowl is in poor condition, but a suitable replacement has been sourced and will be used in the eventual restoration of the lantern.

.

The same lantern seen when still in service in Wolverhampton in 2004.

The C13721 was originally replaced with a Philips MI36 55w SOX lantern, but was itself replaced in 2005 with this Industria 2600 70w SON lantern on a column extension.

REVO Baby-Dalek in REVO 'Vanguard' harp bracket at Haselmere, Surrey; July 2005.