There are several official versions of this composition:
three slightly different live recordings from 1980 and 1981
This composition was performed during TD's tours in 1980 and 1981. This track was used in the movie Thief, but has not been released officially so far. The title Diamond Duster was usewd in the Tangerine Tree fan project and adopted in the official Bootmoon Series, hence it is supposed tro be an official composition name now.