Seeking Info. on USN / RVN Era RAS 9 SSI / Patches

[dpast32]

Hi Guys, I've been attempting to gain a little background on some USN, RVN Era SSI / patches I recently observed. What I'd like to know is their respective dates of use, or issue during Vietnam. They all are Navy, Mobile Riverine Force, River Assault Division 9 types, but I've noted 3 different styles. ( RAS 9 ) There are RED, WHITE, & BLUE types, & I'm trying to get the approximate date(s) of each ? If someone would be so kind as provide me with a brief DATE range of each of t the 3 styles, I'll be most appreciative. THANKS

 

Best, dpast32

[dpast32]

CORRECTION to above Post;

 

Sorry, I meant RIVER ASSAULT SQUADRON 9, Which was the parent command of RIVER ASSAULT DIVISION 92.

 

THANKS

[MilitaryPicker1941]

Please post some pictures if you can