This is an ubu, dated wakizashi by the Jo-saku smith Ozaki Suketaka. Suketaka was well known for toranba examples such as this sword. Mei is Ozaki Nagato no Kami Suketaka, and dated Kyowa san nen hachi gatsu hi (August 1803), two years before his death in 1805. It is interesting to see that this sho matches the date of the dai shown in the Nihonto Koza.
Hawatare: 1 shaku 5 sun 2 bu 58 rin (46.06 cm / 18.13")
Motohaba: 2.7 cm.
Sakihaba: 2.19 cm.
Kasane: 6.9 mm.
Hamon: Notare midare in ko nie, hataraki, kinsuji, sungashi, nado. Itame with jinie and chikei.
This sword is in a high end shirasaya with tsunoguchi and ivory hatomei by John Tirado. NTHK-NPO kanteisho with 77pt worksheet. $4,900 (plus shipping and PayPal). Any questions, please email email@example.com.