So I would like to assemble a historically acurate East German boarder guard officer uniform for my personal collection. I have been looking at jackets all over but im not sure which ones are acurate. Hessen antique has this one but im not sure about it. I am just wanting to make sure if they had a special one or if they had a standard uniform with there Grenztruppen gear a fixed? Im just looking for the most accurate i can get on the surplus market. Any and all information would be very appreciated. https://www.hessenantique.com/East_German_Army_Officer_Service_Jacket_p/s91055910.htm
This pretty much depends on the time frame. The border guards were part of the armed forces and later made their own service, officially outside of the military for political reasons. The uniforms of the military and border guards also changed over time, especially the camouflage.
Here are some authentic photos:
https://www.ddr-museum.de/en/objects/1008854
http://www.grenzkommando.de/uniformen-2.html
The jacket you linked lacks the green cuff title