how old is the Khanda nishan symbol used in today's gurdwarey?

I don't believe this legend. Fact is that Red and Green was the state flag. War flags often had weapons or Durga on it. Durga was the symbol of Waheguru's shakti, invincibility. The Legend is mostly told by Sukhpreet Udhoke. I will post links pre-Sikh Empire flags as well as flags made by me and posted on Wikipedia based on authentic paintings of that era. https://commons.wikimedia.org/wiki/File:Sikh_Basanti.png https://commons.wikimedia.org/wiki/File:Sikh_Empire_flag.jpg based on http://www.sikhmuseum.com/nishan/empire/architecture.html#arch4 https://commons.wikimedia.org/wiki/File:Kattar_Dhal_Talwar.jpg based on http://www.sikhmuseum.com/nishan/empire/religious.html#religious15 https://commons.wikimedia.org/wiki/File:Sikh_flag.jpg based on http://www.sikhmuseum.com/nishan/empire/religious.html#religious11 https://commons.wikimedia.org/wiki/File:Sikh_Akali_flag.jpg based on http://www.sikhmuseum.com/nishan/empire/nihangs.html#nihangs2 Guru Gobind Singh and Attendants ca. 1830's, wall painting, Darbar Sahib A very important painting, this is the only painting of human figures within Darbar Sahib. The Nishan Sahib includes a tulwar sword, a dhal shield with its four metal bosses which act as rivets for the strap handles visible inside the shield surface and at the very bottom a katar dagger. This banner configuration is identical to another depiction of Guru Gobind Singh on an exterior copper wall panel on the front face of Darbar Sahib. A recent photograph of the previous painting. The poor conditions under which this priceless painting is kept with an attached fluorescent tube and metal elements obscuring it will result in permanent damage and eventual loss. In this color photograph we can see that the background is a navy blue with gold speckled pattern and gold paint has been used for the weapons. We can see how the SGPC and the Singh Sabhais are just killing our heritage while they promote their non-historical 1920s made works by Sobha Singh. https://commons.wikimedia.org/wiki/File:Sikh_Regular_Infantry_standard.png https://commons.wikimedia.org/wiki/File:Sikh_Empire_Battle_Standard-2.jpgk Durga flag of Sikh Khalsa Army captured by the English https://commons.wikimedia.org/wiki/File:Sikh_Empire_Battle_Standard-1.jpg Sun flag of Khalsa captured by English http://www.sikhmuseum.com/nishan/mistaken/battle.html http://www.sikhmuseum.com/nishan/19thcentury/places.html http://www.sikhmuseum.com/nishan/20thcentury/modern.html