"Dog Leg Hammer" - what is it? Do I have one?

[Promo]

When documenting my spare parts I also took a group picture of my M1 Carbine hammers. I've been told that it looks like there are so-called "dog leg hammers" among them. A quick research showed that they are differently shaped hammers.

With this I'd vote that the three in the upper left corner are dog-leg hammers. Is this right? And if yes, do they command a premium? And are they really only an early production step, which was later changed?

Thanks in advance!

PS: PM's with questions to sell any of the shown items will be ignored, this is not the place to sell items!

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