I have no way of knowing whether or not it was circulated, but the serial number of the last Bank of England Ten Shilling note commenced with D38N and possibly ended with 999999.
It would really depend on the condition of the note. A note that is in good condition and have not been circulated would have a much higher value than one that is showing wear and tear.
It is worth 5 pence if you mean the English shilling
Ten shillings...
A 1952 Australian 10 Shilling note (Coombs/Wilson)(depending on the serial number), uncirculated and in absolute mint condition could fetch up to $2,000 AUD. If it has been circulated but still in good condition, it might fetch anything from $50 to $725 AUD. A reputable coin dealer will be able to give a more accurate valuation.
An Australian 1937 Ten Shilling note (depending on the serial number), uncirculated and in absolute mint condition could fetch anything from $13,500 up to $20,000 AUD. If it has been circulated but still in good condition, it might fetch anything from $350 to $6,750 AUD. A reputable coin dealer will be able to give a more accurate valuation.
one shilling east african note
The Australian Ten Shilling note had "Half Sovereign" printed on them from 1915 to 1933. To get a valuation, please provide the serial number and the names of the two signatories.
A Bank of England 1967 Ten Shilling note (Series C - red/brown)(Chief Cashier J.S. Fforde - serial B96N), uncirculated and in absolute mint condition could fetch anything up to £10 GBP. If it has been circulated, not much. A reputable coin dealer will be able to give a more accurate valuation.
A ten shilling note (not a pound note) only has prefixes up to M and not X. Is the number you have stated correct? A similar note with number X22A 890058 would be worth around £3 - £5 if in mint condition (these notes were issued between 1970 and 1980 in the UK).
A Commonwealth of Australia Ten Shilling note (Coombs/Wilson - serial AH 18), uncirculated and in absolute mint condition could fetch up to $450 AUD. If it has been circulated but still in good condition, it might fetch anything from $25 to $200 AUD. A reputable coin dealer will be able to give a more accurate valuation.
King George VI appears on the front of the 1937 Australian Ten Shilling note.
A British 1883 sterling silver Shilling (Victoria), uncirculated and in absolute mint condition could fetch up to £200 GBP. If it has been circulated but still in good condition, it might fetch anything from £10 to £90 GBP. A British 1883 sterling silver Shilling (Victoria)(Proof FDC - plain edge), uncirculated and in absolute mint condition could fetch up to £3,750 GBP. NOTE - The reverse of these coins is upside down to the obverse. This is normal. The values quoted are the best possible for the best specimens in their grades, but may be significantly lower due to varying demand for the coin and the prevailing economic climate. A reputable coin dealer will be able to give a more accurate valuation based on inspection of the coin.