CSI's data says the price was O=H=L=C=466.7 which is not correct. See red arrow on chart.
The nice people at www.futuresource.com give the prices for 21 Nov 2008 as follows (see image of table):
- OPEN = 320.6
HIGH = 326.4
LOW = 317.9
CLOSE = 322.0
Perhaps if several of us were to send an email to CSI ( database@csidata.com ), complaining about the obvious error and wondering why WE can find it but THEY cannot, it might accelerate a fix.