Please - after the Gregorian calendar became accepted, WHEN started
prople put a date on their documents? Say, "London, November 4, 1254".
Thanks.

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Clarification of Question by carmi604-ga on 14 Mar 2005 23:53 PST

To Mark-ga,

Thanks for your very interesting comment!
I am interested in first dated documents in the West, in Europe, but
your comment entered me into another culture, and I appreciate that. 
carmi604

It is not an answer to your specific question, but I just learned this
interesting fact:

"Diamond Sutra:
This scroll or 'sutra' was found in 1907 by the archaeologist Sir Marc
Aurel Stein in a walled-up cave near Dunhuang, on the Silk Road in
north-west China, with thousands of manuscripts and a few printed
items. Although not the earliest example of blockprinting, it is the
earliest which bears an actual date: 'the 13th of the fourth moon of
the ninth year of Xiantong' (i.e. 11 May, 868)."

British Library: Permanent Exhibitions
http://www.bl.uk/whatson/exhibitions/permanent.html

"On 18 November, 1477, was finished the printing of the Dictes and
Sayings of the Philosophers, the first dated book issued in England."

http://www.bartleby.com/212/1304.html

"Today in History," a program that is part of
www.writersdreamtools.com, lists July 26, 1386 as the date when King
Richard II signed a decree, and that signature survives today?the
oldest dated signature in history. However, that would have been the
Julian Calendar since the Gregorian didn't come into force in Britain
until September 3, 1752 which became September 14.