This class comprises Post Office headquarters files which, as a time saving wartime measure, were recorded under a Decimal Filing system, instead of the previously used 'Minuted' system. Like the minuted series, the files cover a diverse range of subjects and registry staff continued to add files to the series after it had nominally been closed in 1949: consequently, records date up to 1967. Subjects covered in the papers include inland and overseas telecommunications during and after wartime, the issue of stamps, and Post Office administrative records, such as those covering the introduction of the Decimal Filing system.
The Decimal Filing system was a simple system based on numbers being allocated to particular subjects or headings, with decimal extensions of these numbers being allocated to subheadings: e.g. 10 = Postal Packets, 100 = Letters (Ordinary). No record volumes were created for the Decimal Filing series; papers were filed in batches according to the common serial number allocated for a particular subject.
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