For your consideration, a wakizashi by Yamato no Kami Fujiwara Tadayuki (Hôei era: 1704~1711)
(preferably a UK sale due to potential hassle with UK border force, but will sell outside the UK if the buyer is patient - it took a month to clear last time I exported a sword).
The blade has NBTHK Tokubetsu Hozon papers and the koshirae, tsuba and fuchi-kashira all have NTHK-NPO Kanteisho papers.
I bought it from Pablo (Unique Japan) and there is a video of it here: https://www.youtube.com/watch?v=gY25ggvrePE&t=2s
Pablo does a great job of providing excellent photos and info for his swords, so all the info is in the catalogue extract, shared here:
https://1drv.ms/b/s!Au0p7phbocIZgekOWoXkWLXc8sfinQ?e=bwZCHP (If that link doesn't work, email me and I'll send you the 10Mb file).
Alternately, its in Catalogue 36 on Pablo's site here:
https://new.uniquejapan.com/wp-content/uploads/2021/04/Unique-Japan-Sword-Catalogue-36.pdf
Note: The catalogue is huge at about 125MB, so will take a while to download. Search for ujwa251 in the catalogue.
It comes with a shirasya, the papers, sword bags and a printed catalogue extract booklet, as supplied by Pablo as part of the original sale.
I'm asking just £2,500 GBP, plus shipping or delivery at cost, for a quick sale.
Cheers,
Jon