Need help! “RGA” jacket… is it Royal Garrison Artillery or Royal Guernsey Artillery? Also, a “red-guard” question…

I’m in the process of selling off a uniform collection on ebay, mostly WW2 but some earlier. I know enough to sell the Irvin and A-2 etc but know very little about the earlier jackets.
There is a possibility this is a Guernsey one as I also have the "red guard(?)" jacket shown here.
Could anyone help me with these two jackets please?

RGA Jacket pictures by 123hobbyguy - Photobucket

Guernsey Red Jacket pictures by 123hobbyguy - Photobucket

Comments are closed.