King Charles and the cavalry badges

Emperor and King Charles visited the fronts a lot as heir to the throne, inspected the troops, and awarded decorations. He was wearing cap badges regularly at that time. In this post, I present a photo reproduced in the form of a postcard, on which two Kappenabzeichen decorate his officer’s cap.

I have known the photo for a long time, but I can only guess based on the outlines of the two cap badges on it which ones they are. The one on the left has a more special, more articulated shape, so I suspect it is the badge of the 1st Hussar Regiment. I am more uncertain about the badge on the right. This is the common oval shape, with the imperial crown on top. There were several types of this shape. This badge is smaller in size than the hussar badge, the oval shape is thicker, more squat (there were more elongated oval shapes). Finally, we can see on the right side of the badge that it is framed by a laurel or rather oak crest. Based on all this, I think it is likely the badge of the 9th Dragoon Regiment, but it could easily be another badge.