Hi @Arne that wonderful platform indicator was manufactured here in Australia by Strong ... they are pretty thin on the ground here so you did great in snapping that one up ...
Its really hard to google info on as you no doubt have found , because "Strong" simply is used soooooo many ways ... but I found an Auction listing showing one
https://www.antiquesreporter.c...on-board-with-clock/
The ones I have seen ( not in person , but on web) usually have a faint "Strong" punched into the underside of the base , but its usually very faint and in some models probably is not there at all ?
They did different versions , I have seen one for Victoria ( your model) and one for New South Wales , of course they have different names on the paper but are identical otherwise 
made in the late 40's to early 50's I believe , but I think @Jamie Thompson might know more?
@Don McErlean Like you , currently I have only the crappy auction pics to go on LOL!
But I did hold back the underneath shot ... its def 0-4-0 oh and auto-reversing motor
Lovely little Joyline consist too Don ... best I can come up with is my rusty old boy ...
