Nihonto Club

Hi, i need some help and i'm here :) . i live in France and i started a tiny collection of Japanese sword ( tantô, gunto... )

i have this wakizashi. it is not in great condition ( i bought it in this bad condition ).
i'm looking for some informations... the hamon is almost invisible, it seems to be suguha ( i'm not sure ).
blade is Hira, mune is maru ( i'm sure is the original shape )
but polish is very bad and it seems the former owner do some bad thing with very fine sand paper... i see some hada

I would like know how old is it

what is this inscription on the tsuka ?

and if you have any others informations, i take.

Thanks and sorry for my bad english :)

http://i86.servimg.com/u/f86/12/36/39/59/img_3914.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3919.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3916.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3915.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3920.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3928.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3917.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3924.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3922.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3921.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3918.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3925.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3926.jpg

http://i86.servimg.com/u/f86/12/36/39/59/img_3923.jpg