Hi helpwithmy victa, how the badge come to be there is a mystery....but a lucky outcome for you as they are a highly collectible item.
Your machine is definitely
not a Model 4, it does not have the axle cover or height elevator extensions for the "Predicta" flaps used on the Automatic, or the screw holes on the left hand side for the side safety rim guards that were fitted to all Autos, and a completely different base to the Standard 18 which had a 'safety ring' instead of the rim guards.
Here's a pic,
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2012/05/full-1147-6466-victa_automatic_advert.jpg)
Hoping this gives you some explanation.