This can is the emblem of the vintage solex! It is fixed with a canister door usually left front of your solex. There existed at the time several types of canister door but most generally it was fixed on the left front wheel nut.
This is the yellow version of the can of solex which corresponds to older years.
This lot is sold new, it includes the casing of tin, the cap with gasket as well as the sticker stuck on the can (resistant), canister black color holder on wheel nut.