Are you sure it is 4806? I recall either 4403 or 4807 being called "bruce" during their time at Junee roundhouse, and the names might have been from earlier than that.
It would have been at least 6 months ago but last I saw it was still down the back of Delec, 4503 was there at the time too.
Somewhere I have a pic of Bruce the painter from Chullora Workshops with said "Bruce" number plated 4806 not long before it ceased as a Gov't workshop in 1999-2000.