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They are the original scales. Take a magnifier and look at the bit between the swirls of leaf design - the right hand twin is quite clearly visible.

Those heavily filled (ie a lot of inert filler...

What a beauty - I envy you!

Doesn't need much done at all, but unpinning would certainly help in order to properly clean the tang. Personally I wouldn't do much - if anything - to the face of the...