The last 8 in the date of both types look to have been reworked and are rather messy, but neither is an obvious overdate. At this time the Mint were using up old working dies and a larger number of altered dies are from this period
Many of them have the reworked/overstruck 8 as John says which Bramah recorded as 25c. My own specimen (large date) has this plus the 1 over 1 and all numerals double struck.