Historical information
Based on the attached note "Experimental run number plate used by MMTB 1930/31 to decide if white on black or black on white should be used". Such plates are used by depots to indicate to Inspectors and other staff the allocated run or timetable trip for a particular service.
Significance
Based on the note, used as a development item to be used on trams.
Physical description
Run Number steel sheet with corners trimmed and rounded, two holes for hanging, with an off-white background and the letter "E" and number "9" painted in black. Has a part of a tag with notes wire to the item.
Inscriptions & markings
See image 2.