This is an old article but is still a good example of the mount for museum objects being seen as a solution for the dual purpose of installation and transportation. V&A Conservation Journal, Autumn 2008, Issue 56. http://www.vam.ac.uk/content/journals/conservation-journal/issue-56/mount-making-for-the-medieval-and-renaissance-exhibition-tour/
Figure 1. Detail of one of the soldered removable arms and the corresponding notch cut into the back plate (Photography by Hannah Brown)