G'day,
for a long period (1834~1926), the general circulation 3d was nearly the same as the Maundy 3d - crowned-3, so there were large numbers produced in those years, but only a small number were used in the Maundy ceremony. Seaby doesn't give mintages. He says the 3d was produced 1834~37 "for use in the West Indies", and describes it as "As Maundy 3d but with a dull surface". He describes the issues of 1838~44 as "... for colonial use only ... as Maundy 3d but with a less prooflike surface". 3d was minted most years from 1845 to 1926, apparently for general circulation within U.K. The 3-acorn design entered general circulation in 1928.
The silver 4d, generally known as a groat, recommenced in 1836, had Britannia on the general issue, and Crowned-4 on the Maundy, so these are readily distinguished. Minted upto 1855, and again in 1888.
The silver 1d and 2d have not been produced for general circulation for a considerable time, but my limited resources at home don't enable me to say for how long.
Peter