Help with Adirondack Bat

[UKCardGuy]

I'm more familiar with H&B bats than Adirondack. But I picked up this Hank Bauer Adirondack bat and I could use some assistance please.

Here's my questions:
1. On an Adirondack bat what do the words "Professional Model" indicate? Based on my research (ermmm google), I think Personal Model indicates a professional bat.

2. Based on the center label and Keymancollectibles, I think the bat dates from 1960. The center label style was used from 58-60 but the bats only used the phrase "Whip Action" (instead of Flexible Whip Action) in 1960.

I've seen model 212 but not 21266. I've not been able to find the model 21266. Can anyone shed some light on the model 21266?

3. There was a handwritten label on the bat that said it was game used but I doubt it. I think it was a store model because of the 33 on the end. According to Malta's book, Baeur would hve been using a 35" model 113A in 1960. So I really don't think it was game used by Bauer (though I'd be wrong on that.) Is my assessment correct?

Any general guidance on Adirondack bats would also be welcome.

Thanks,