Table:
text: List of Last of the Summer Wine episodes
Series
Series
Series_Number Number_of_Episodes Original_Air_Date DVD_Region_2_release_date DVD_Region_1_release_date
1 6 1973 2 September 2002 TBA
2 7 1975 2 September 2002 TBA
3 7 1976 26 July 2004 11 March 2008
4 7 1977 26 July 2004 9 September 2008
5 7 1979 5 March 2007 6 September 2009
6 7 1982 5 March 2007 27 April 2010
7 6 1983 3 March 2008 27 April 2010
8 6 1985 3 March 2008 9 July 2010
9 12 1987 5 May 2008* 18 January 2011
10 6 1988 22 September 2008 12 April 2011
11 7 1989 22 September 2008 12 April 2011

text: List of Last of the Summer Wine episodes
Series
Series
Series_Number Number_of_Episodes Original_Air_Date DVD_Region_2_release_date DVD_Region_1_release_date
25 10 2004 TBA TBA
26 10 2005 TBA TBA
27 9 2006 TBA TBA
28 10 2007 TBA TBA
29 11 2008 TBA TBA
30 10 2009 TBA TBA
31 6 2010 TBA TBA

Question: What is the lowest serial number from the list of Last of the Summer Wine episodes that originally aired before 2009 with more than 7 episodes and had a Region 2 DVD release date of July 26, 2004?