Marines--need some help

[megaladon6]

I'm trying to plan out a tattoo for my father. I want to incorporate the EGA and his battalion/regiment. was there ever an official regiment patch? he was 1st/9th 3rd division, the Walking Dead (Vietnam) if that helps.
i have seen different patches, but i think they are all unofficial.
thanks!

 

[NY87SS]

http://en.wikipedia.org/wiki/1st_Battalion_9th_Marines
http://acroeng.adobe.com/byteserving/op ... arines.pdf
http://www.thewalkingdead.org/honorroll/powmia.html
http://www.theveteransvoice.com/TheWalkingDead19.html


Many sources, same insignia!!!