Sadly this is the case with much of what survived the productions from hand props to sets to costumes and helmets.Much has been lost and much has just been in the hands of people who knew little about their preservation or didn't care.
One of my favourite stories is one of the R2 domes from TPM was found a couple of years ago being used as a hanging basket for flowers in a crew members garden.
Seriously.
lol
Anyway sorry to derail Ady's thread.Welcome aboard DV.