BENCHMARKS continued
This one is on a corner-stone of a building on Morning Star Avenue that is now in use as an apartment block but was once the Hardwicke Fever Hospital. Interestingly the map shows that the 'mark should be nearer to the centre of the front of the building rather than on the corner.
Below: The 'mark on the apartment block at Morning Star Avenue.
Above: Looking from Morning Star Avenue across the front of the apartment block with the 'mark at left-bottom on the corner.