Datemarks In The Austrian Empire

Good morning,

I was wondering about the introduction of date marks in Austria in the period 1820-1830 and in Lombardy-Venetia in 1831. Does anyone know something about the postal law about this happening? The best would be the scan of the document

Regards

Francesco

I don't know if this helps, but I'we read somewhere, that in hungarian territories before 1839 (may, but I am not sure) post masters made the postmarks themselves, according their own design. Usually the date was not included (only handwrite or SEPARATE date postmark). From 1839 (may?) it became obligatory the declaration of month and date ON postmarks. I don`t know if this referred to the whole Empire. So maybe there was a prescription in 1839 regarding postmarks.

Prephilately: the first hungarian (from hungarian territory) examples of a SINGLE postmark containing data about place & date are from 1824, from Buda and Debrecen.