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Auction Bid Assistant

Japanese katana sword auctions: samurai swords and fittings, searched at once

Japanese swords, katana, tachi and wakizashi, are collected as much for the swordsmith's skill and the fittings, tsuba, menuki and saya, as for the blade itself, and genuine antique nihonto command serious premiums over the many modern decorative reproductions that flood the market. A signed tang (mei), documented provenance, or a matched set of original fittings all separate a genuinely collectable sword from a display piece.

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Why Japanese sword lots get missed

General sellers often can't distinguish a genuine antique nihonto from a modern decorative reproduction, and list both the same way as "Japanese sword," so a real find can be sitting in a listing indistinguishable from a mass-produced display katana.

One search across every platform

Auction Bid Assistant's free browser extension searches the-saleroom, EasyLive, Bidspotter, Invaluable, NumisBids, iCollector and LiveAuctionWorld simultaneously, alongside eBay. Search "katana," "tachi," "wakizashi," a fitting type like "tsuba," or "Japanese sword" generally and results return across all of them, with images, estimates, current bids where shown, and sale countdowns, sorted by platform in tabs.

Auction Bid Assistant search results for 'Japanese katana sword' showing genuine katana swords, fittings and sword maintenance kits

Real results for "Japanese katana sword": genuine katana swords, fittings, and traditional maintenance kits, found in one search.

It works by searching from inside your own browser, the same as opening and searching each site yourself, just done in seconds. Nothing is stored on our servers, permissions are minimal, and the extension never places a bid on your behalf.

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Alerts: for the sword types or fittings you collect

Save a search ("katana," "tachi," "wakizashi," a fitting type, or "Japanese sword" generally) and get emailed the moment a new lot matches it, across all covered platforms including eBay, rather than relying on remembering to check each one.

Want to try before installing?

The same search box works on this website with no install at all for eBay, iCollector, LiveAuctionWorld and Featured Auction catalogues, a quick way to see matching Japanese sword lots before adding the rest of the platforms via the extension.

๐Ÿ” Try a search now, no install

Built for how Japanese sword collectors actually work

Save any lot with one click from search results, export your shortlist as a printable PDF or CSV before a sale, and on the day itself the optional live bridge feeds the auctioneer's asking price into the free bid calculator, so your maximum (with buyer's premium and any applicable taxes included) is always in front of you.

Common questions

Can I search Japanese katana sword auctions across multiple platforms at once?

Yes, the free Auction Bid Assistant browser extension searches the-saleroom, EasyLive, Bidspotter, Invaluable, NumisBids, iCollector and LiveAuctionWorld simultaneously, alongside eBay, from one search box.

Does it cover fittings like tsuba and koshirae, not just complete swords?

Yes, a fitting type, "katana," "tachi," "wakizashi," or "Japanese sword" generally all search the same way across all covered platforms.

Can I get alerted the moment a new Japanese sword lot is listed?

Yes, save a search and get an email the moment a new lot matches it, across all covered platforms including eBay.

Is the Auction Bid Assistant extension safe?

It requests minimal permissions, cannot read browsing history, only reads publicly visible auction listings, and never places bids.