As part of the standardisation of weights and measures introduced in England in 1826, Imperial Bushel Measures were used to portion items such as grains.

In this instance as shown in the seal, a heaped measure was standard for wheat.
  
Vendors selling fruit in local markets were required to display their product in  half bushel and bushel measurements.

The brass container as shown in the picture, would be used as a standards measure, not as an actual receptacle in which to sell merchandise.