i see the areas mentioned- not as obvious when you actually see it under a daylight light. oddly, in the inside of the bowed area, which is chequered, it looks like there is an area in the centre about 10mmx5mm where it is polished, but chequered and slightly raised almost like a slot where a stub of blade tang was peened (or hammer welded) over & polished & chequered over. in any case the weld repair was a long time ago.
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