question on signal school badge

[badgecollector]

hi all
what are the thoughts of the AIF signals school badge shown in this pic from the museum in victoria? hard to make out, but i think it says "signal school victoria"

the description says ww2 period but looks like WW1 period to me with its style, or maybe 1920-30s.

then ive also found this example. same but different. not designated to a state.
anyone know of any other examples?

regards
bc