The
State Bank of Pakistan (SBP) has declared and publicized that the preceding besides
old 500 rupee currency notes will certainly not use as well as no longer remain
a valid currency note for exchange from 1st October 2011. 

(It’s the former
announcement of the State Bank of Pakistan).

Pakistani
Currency:

The
progress appears as an element of an enduring proposal to replace all old
currency notes. The old 500 rupee note which was introduced in April 1986 will
be replaced by the new currency notes and will carry away to have any exchange
value from October 1, 2011.

The
SBP has informed and asked the general public to replace their old 500 rupee
notes with the new ones from any bank in the country before September 30, 2011,
before they are caused to be invalid in the future in respect of exchange.
old 500 note Pakistan