| Location | England Hertfordshire Old Hall Green |
| E side of: unnamed road (former A10) | |
| Distance (N) from Greenwich | |
| OS map details | OS Explorer: 194 |
| OS grid ref | TL 37650.21938 (537650,221938) |
| WGS84 lat/long | 51.879025, -0.001673 |
| Type | Bollard |
| Marking date | 1984 |
| Access | Unrestricted |
, Bollard/2018_05_06/01_IMG_7070.JPG)
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