There are many key words in the title of this collection: Index to Selected Final Pension Payment Vouchers, 1818-1864. Each are explained as follows:
Index: These are 3x5 slips created by the National Archives staff while working with the archived records of payments made by pension offices. Each card refers to a pension payment record and often to a pension voucher.
Selected: The vouchers were originally within pension agents' accounts. They were removed and selected by the National Archives staff to give researchers easier access to an important genealogical resource.
Final: While the title refers to "final" payment vouchers, there are also "last" payment vouchers included in this index. "Last" refers to the last payment of record while the "final" payment indicates that the pensioner has died and that a final payment was made on his account. A "last" payment could have been made for several reasons, including death or that the pensioner no longer visited the pension office to receive further payments due.