Coughtrie SP10 Lantern Installations
The Coughtrie SP10 was the larger version of the SP6 or the SY6. This was perhaps one of the most common bulkheads by Coughtrie. The design originates from the 1950s, and as such has been in production for over 70 years. It could accept a single B22 or E27-based lamp, but is intended for fluorescent lamps.
Drayton Bassett
This example of the SP10 can be seen down Church Close. It appears quite grubby due to it's multi-decade service.