Interesting! I had the same "It's a hand-axe, no, wait, it's too small" reaction.
Not that I'm arguing. The one hand axe I got to handle in Anthropology way back when was a bit bigger than my hand, or about twice the size of the example you've got here. It was also right handed, something I noticed as a leftie...
Yours is also missing the point that I saw on the other one.
Oh well, at least it shows that they weren't standardizing their knives even then
Neat blade!
Fearn