These are likely fakes. For years, some unscrupulous sellers have decorated random milk bottles with this design. Naive collectors know authentic Disney milk bottles go for a small fortune, so this is an attempt to con them when they find them for 20 or 30 bucks. I've owned about 6 different milk bottles with this design, all different shapes, from different years. On some, you can still see the original pyro design that has been scraped or acid washed off.
That said, if you can find a reliable reference, I'd be interested in seeing it.
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