Japanese letters in Taishokoto

At a flea market in Kyoto, I bought a Taishokoto (or Nagoya harp). Inside this music instrument, there is a label with Japanese letters and a number.

Can anyone tell me whether this could the name of the manufacturer, of the instrument brand, or something else?

This is a picture of the label:
https://www.dropbox.com/s/t3w4s6xpzr4gefq/DSCF6282.JPG

(sorry, it was not easy to get a good picture because it is inside the instrument)

This is the full Taishokoto:
https://www.dropbox.com/s/zgp89h0su2jdnbb/DSCF6283.JPG

Thanks even for trying!

Kikuyae - seems to be the manufacturer name
No. 9809 - serial number
F28JS - type/model

It's probably this company
http://www.kikuyae.jp/
http://www.kikuyae.jp/taishogoto.html

AK, thank you so much!