When my young bloke bought a Helmet in Bali it had no stickers so we managed to remove the sticker off a $12 bike helmet & put it on, this was about 4yrs ago but I might check Kmart & see if the stickers have any of the above numbers on them as my helmet is only 12mths old & I don't see why I should change it, fine for a bike but not inside a bloody car.

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Beaten up old 98 Gen 2 Liberty, 13.0, stock V3 STI running gear.
07 Transit motor home
69 VF & 70 VG Valiants needing full restoration
Yamaha Zooma 50cc rocket hopefully going with the Transit.