| Old Cavendish Street office replaced the Vere Street office,but covered the same area, |
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| Type 1. Standard Series. In use from 1843 to 1853?
This cover dated 10 February 1844 shows the basic design mark with a frame size of 24.5 x 24,
with moveable characters. It was struck in red ink. There appear to be no known variants of this mark. |