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See how the distance from the heal to the pivot on yours is about 2/3 the length of the W&B above most of my blades from a 1" W&B to a 5/8 are very close to the same size

your workmanship & finish does look excellent,
but the tang looks short to me also.

just my observations & opinion YMMV
as a guide for designs, all my vintage straights I have been measuring...