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very little info indeed,would love to learn more.

cannot answere your question,I think the larger the blade the more subtle the belly,the one I posted is well over 8/8

Is not easy to see as the belly is very subtle,see the two ink marks on the toe and the tang end, connect them along the edge of the blade,you can see the belly in the form of sort of a ridge.
Is...

Bellied Hollows are fantastic blades,have quite a number of them,never understood why so few makers used them.and more did not.

Any and all of my Palmeras,those and my Fillys and a few other large blades are all I use anymore,Sold/selling all the rest.