Hi Kin, welcome to NMB.
Sorry to say I find a couple of "ODD" features with this tsuba. There is an impossible sword strike mark on the omote side above the hitsu and across the seppa-dai - - impossible because such a strike would need to cut longitudinally through the blade, unless the tsuba was struck whilst dismounted [In which case why would there be a defensive strike?] Also the hitsu is well outside the seppa-dai and would not serve the purpose of slotting a kozuka or kogai into the saya - unless the saya was massively thick. Combine this with the tagane-ato on both sides of the tsuba being identically placed, as a rule punch marks tend to be on one face with occasionally extra when one side is beaten too thin. The odd divots on the seppa-dai where the signature is engraved don't add up either. The indented pattern over the surface is a fast and sloppy way of trying to look like nanako. So for me it is a tourist piece as Jean has said or maybe a paperweight. I will keep searching and see if I can find others like it.