No online articles, but on the back page of the front section of today's Canberra Times, there was a mention that the "C 13" plate has gone missing from the Retired ACT Transport Employees Club clubhouse, after the recent open days.
If anybody knows anything, you can contact RATEC via webmaster@ratec.actbus.net
As it turns out, C 13 never left the building. It was found in a cupboard during a clean up.
Good to hear, thanks for the update Martin.